Day: October 13, 2022

Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-oneOn March 31, 2006, Ye, Diana Z.; Tai, Mei-Hui; Linning, Katrina D.; Szabo, Csaba; Olson, L. Karl published an article in Diabetes. The article was 《MafA expression and insulin promoter activity are induced by nicotinamide and related compounds in INS-1 pancreatic β-cells》. The article mentions the following:

Nicotinamide has been reported to induce differentiation of precursor/stem cells toward a β-cell phenotype, increase islet regeneration, and enhance insulin biosynthesis. Exposure of INS-1 β-cells to elevated glucose leads to reduced insulin gene transcription, and this is associated with diminished binding of pancreatic duodenal homeobox factor 1 (PDX-1) and mammalian homolog of avian MafA/L-Maf (MafA). Nicotinamide and other low-potency poly(ADP-ribose) polymerase (PARP) inhibitors were thus tested for their ability to restore insulin promoter activity. The low-potency PARP inhibitors nicotinamide, 3-aminobenzamide, or PD128763 increased expression of a human insulin reporter gene suppressed by elevated glucose. In contrast, the potent PARP-1 inhibitors PJ34 or INO-1001 had no effect on promoter activity. Antioxidants, including N-acetylcysteine, lipoic acid, or quercetin, only minimally induced the insulin promoter. Site-directed mutations of the human insulin promoter mapped the low-potency PARP inhibitor response to the C1 element, which serves as a MafA binding site. INS-1 cells exposed to elevated glucose had markedly reduced MafA protein and mRNA levels. Low-potency PARP inhibitors restored MafA mRNA and protein levels, but they had no affect on PDX-1 protein levels or binding activity. Increased MafA expression by low-potency PARP inhibitors was independent of increased MafA protein or mRNA stability. These data suggest that low-potency PARP inhibitors increase insulin biosynthesis, in part, through a mechanism involving increased MafA gene transcription.5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one) was used in this study.

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

COA of Formula: C10H11NOOn March 17, 1998, Ruf, Armin; de Murcia, Gilbert; Schulz, Georg E. published an article in Biochemistry. The article was 《Inhibitor and NAD+ Binding to Poly(ADP-ribose) Polymerase As Derived from Crystal Structures and Homology Modeling》. The article mentions the following:

Inhibitors of poly(ADP-ribose) polymerase (PARP, EC 2.4.2.30) are of clin. interest because they have potential for improving radiation therapy and chemotherapy of cancer. The refined binding structures of four such inhibitors are reported together with the refined structure of the unligated catalytic fragment of the enzyme. Following their design, all inhibitors bind at the position of the nicotinamide moiety of the substrate NAD+. The observed binding mode suggests inhibitor improvements that avoid other NAD+-binding enzymes. Because the binding pocket of NAD+ has been strongly conserved during evolution, the homol. with ADP-ribosylating bacterial toxins could be used to extend the bound nicotinamide, which is marked by the inhibitors, to the full NAD+ mol. In addition to this study using 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one, there are many other studies that have used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5COA of Formula: C10H11NO) was used in this study.

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.COA of Formula: C10H11NO Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Electric Literature of C9H7ClN2On June 1, 1982, Sawanishi, Hiroyuki; Hirai, Toyoko; Tsuchiya, Takashi published an article in Heterocycles. The article was 《Photolysis of pyridyl, quinolyl, and isoquinolyl azides in hydrohalic acids》. The article mentions the following:

Irradiation of 4-azidopyridine and -quinoline in 6 N HCl or HBr at room temperature gave the corresponding 3-amino-4-halo compound (10-15% yield) and 4-aminopyridine and 4-aminoquinoline (25-35% yield). On the other hand, similar treatment of 4 azidopyridine N-oxide and 4-azidoquinoline N-oxide gave the corresponding 4-amino-3-halo compounds (80-95% yields). Also, similar treatment of 3-azidoquinoline and 4-azidoisoquinoline, both the free bases and the N-oxides, gave results similar to those for 4-azidopyridine N-oxide. Photolysis of 4-azidopyridine and -quinoline occurred through azirine of azacycloheptatetraene intermediates. The photolysis of 4-azidopyridine N-oxide and 4-azidoquinoline N-oxide occurred through nitrenium ion intermediates.3-Chloroisoquinolin-4-amine(cas: 342899-38-1Electric Literature of C9H7ClN2) was used in this study.

3-Chloroisoquinolin-4-amine(cas: 342899-38-1) belongs to isoquinoline.Electric Literature of C9H7ClN2 Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

COA of Formula: C10H11NOOn October 31, 1999 ,《Pharmacologic disruption of base excision repair sensitizes mismatch repair-deficient and -proficient colon cancer cells to methylating agents》 appeared in Clinical Cancer Research. The author of the article were Liu, Lili; Taverna, Pietro; Whitacre, Cecilia M.; Chatterjee, Satadal; Gerson, Stanton L.. The article conveys some information:

Previously we showed that a mismatch repair (MMR)-deficient cell line, HCT116 (hMLH1 mut), unlike a MMR wild-type cell line, SW480, was more resistant to the therapeutic methylating agent, temozolomide (TMZ), because the MMR complex fails to recognize TMZ-induced O6-methylguanine DNA adduct mispairings with thymine that arise after replication. TMZ also produces N7-methylguanine and N3-methyladenine adducts that are processed efficiently by the base excision repair (BER) system. After removal of the methylated base by methylpurine glycosylase, which creates the abasic or apurinic-apyrimidinic (AP) site, the phosphodiester bond is hydrolyzed immediately by AP endonuclease, initiating the repair of the AP site. Methoxyamine (MX) reacts with the abasic site and prevents AP endonuclease cleavage, disrupting DNA repair. MX potentiated the cytotoxic effect of TMZ with a dose modification factor (DMF) of 2.3 ± 0.12 in SW480 and 3.1 ± 0.16 in HCT116. When combined with O6-benzylguanine (BG), MX and TMZ dramatically increased TMZ cytotoxicity (65.8-fold) in SW480, whereas no additive effect was seen in HCT116. This suggests that N7-methylguanine and N3-methyladenine adducts are cytotoxic lesions in MMR-deficient and wild-type cells when BER is interrupted. Because poly(ADP-ribose) polymerase (PARP) aids in processing of DNA strand breaks induced during MMR and BER, we asked whether PARP inhibitors would also affect BER-mediated cell killing. We found that PARP inhibitors PD128763, 3-aminobenzamide, and 6-aminonicotinamide increased the sensitivity to TMZ in both HCT116 MMR-deficient cells and SW480 MMR wild-type cells. In HCT116 cells, PD128763 remarkably decreased resistance to TMZ, with a DMF of 4.7 ± 0.2. However, the combination of PD128763, BG, and TMZ had no greater effect, indicating that persistent O6-methylguanine had no effect on cytotoxicity. In SW480, the DMF for TMZ cytotoxicity was 3.1 ± 0.12 with addition of PD128763 and 36 with addition of PD128763 and BG. Synergy anal. by median effect plots indicated a high degree of synergy between TMZ and MX or PD128763. In contrast, 1,3-bis(2-chloroethyl)-1-nitrosourea combined with either MX or PD128763 showed little if any potentiation observed in the absence of BG in either cell line, suggesting that BER pathway has little impact on cytotoxic processing of 1,3-bis(2-chloroethyl)-1-nitrosourea-induced adducts. These studies indicate that targeting BER with MX or PARP inhibitors enhances the cytotoxicity of methylating agents, even in MMR-deficient cells. In the part of experimental materials, we found many familiar compounds, such as 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5COA of Formula: C10H11NO)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.COA of Formula: C10H11NO Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chatterjee, Satadal; Cheng, Ming-Fang; Berger, Ravi B.; Berger, Sosamma J.; Berger, Nathan A. published an article on February 15 ,1995. The article was titled 《Effect of inhibitors of poly(ADP-ribose) polymerase on the induction of GRP78 and subsequent development of resistance to etoposide》, and you may find the article in Cancer Research.Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one The information in the text is summarized as follows:

The authors have recently demonstrated that cell lines deficient in poly(ADP-ribose) synthesis due to deficiency in the enzyme poly(ADP-ribose) polymerase (PADPRP) or depletion of its substrate NAD+ overexpress GRP78. Furthermore, this overexpression of GRP78 is associated with the acquisition of resistance to topoisomerase II-directed drugs such as etoposide (VP-16); (S. Chatterjee et al., Cancer Res., 54: 4405-4411, 1994). Thus, the authors studies suggest that interference with NAD+-PADPRP metabolism could provide an important approach to (a) define pathways of GRP78 induction, (b) study of the effect of GRP78 on other cellular processes, (c) elucidate the mechanism of GRP78-dependent resistance to topoisomerase II targeted drugs, and (d) modulate responses to chemotherapy in normal and tumor tissues. However, in the in vivo situation, it is impractical to interfere with NAD+-PADPRP metabolism by mutational inactivation of PADPRP or by depletion of its substrate NAD+. Therefore, the authors have examined several inhibitors of NAD+-PADPRP metabolism including 3-aminobenzamide, PD128763, and 6-aminonicotinamide for their ability to reproduce the results obtained with cell lines deficient in NAD+-PADPRP metabolism relative to the induction of GRP78 and subsequent development of resistance to VP-16. The authors studies show that 6-aminonicotinamide treatment is highly effective in the induction of GRP78 and subsequent development of resistance to VP-16, whereas treatment with 3-aminobenzamide or PD128763 does not induce GRP78 and thus does not result in VP-16 resistance. The results came from multiple reactions, including the reaction of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline. Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Product Details of 129075-56-5On October 31, 1995 ,《Potentiation of temozolomide-induced cytotoxicity: A comparative study of the biological effects of poly(ADP-ribose) polymerase inhibitors》 appeared in British Journal of Cancer. The author of the article were Boulton, S.; Pemberton, L C.; Porteous, J K.; Curtin, N J.; Griffin, R J.; Golding, B T.; Durkacz, B W.. The article conveys some information:

Four poly(ADP-ribose) polymerase (PADPRP) inhibitors [3-aminobenzamide, benzamide, 3,4-dihydro-5-methoxyisoquinolin-1(2H)-one (PD 128763) and 8-hydroxy-2-methylquinazolin-4(3H)-one (NU1025)] were compared with respect to their effects on a number of biol. end points. The following parameters were assessed: their ability to inhibit the enzyme in permeabilized L1210 cells; their ability to potentiate the cytotoxicity of temozolomide (including the cytotoxicity of the compounds per se); their ability to increase net levels of temozolomide-induced DNA strand breaks and inhibit temozolomide-induced NAD depletion. PD 128763 and NU1025 were equipotent as PADPRP inhibitors, and 40- and 50-fold more potent than benzamide and 3-aminobenzamide resp. All the compounds acted in a concentration-dependent manner to potentiate the cytotoxicity and increase DNA strand break levels in cells treated with temozolomide. There was an excellent correlation between the potency of the compounds as PADPRP inhibitors and their effects on cell survival and DNA repair. Temozolomide treatment caused a decrease in cellular NAD levels, and this was abolished by the PADPRP inhibitors. In conclusion, the new generation of PADPRP inhibitors are at least 50-fold more effective than 3-aminobenzamide as chemopotentiators, and can be used at micromolar rather than millimolar concentrations in intact cells. After reading the article, we found that the author used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Product Details of 129075-56-5)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.Product Details of 129075-56-5 Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Tao; Hu, Mengshi; Chen, Yong; Xiang, Mingli; Tang, Minghai; Qi, Wenyan; Shi, Mingsong; He, Jun; Yuan, Xue; Zhang, Chufeng; Liu, Kongjun; Li, Jiewen; Yang, Zhuang; Chen, Lijuan published their research in Journal of Medicinal Chemistry on December 10 ,2020. The article was titled 《N-(Pyrimidin-2-yl)-1,2,3,4-tetrahydroisoquinolin-6-amine Derivatives as Selective Janus Kinase 2 Inhibitors for the Treatment of Myeloproliferative Neoplasms》.Related Products of 186390-79-4 The article contains the following contents:

In this study, we described a series of N-(pyrimidin-2-yl)-1,2,3,4-tetrahydroisoquinolin-6-amine derivatives as selective JAK2 (Janus kinase 2) inhibitors. Systematic exploration of the structure-activity relationship though cyclization modification based on previously reported compound 18e led to the discovery of the superior derivative 13ac. Compound 13ac showed excellent potency on JAK2 kinase, SET-2, and Ba/F3V617F cells (high expression of JAK2V617F mutation) with IC50 values of 3, 11.7, and 41 nM, resp. Further mechanistic studies demonstrated that compound 13ac could downregulate the phosphorylation of downstream proteins of JAK2 kinase in cells. Compound 13ac also showed good selectivity in kinase scanning and potent in vivo antitumor efficacy with 82.3% tumor growth inhibition in the SET-2 xenograft model. Moreover, 13ac significantly ameliorated the disease symptoms in a Ba/F3-JAK2V617F allograft model, with 77.1% normalization of spleen weight, which was more potent than Ruxolitinib. The experimental part of the paper was very detailed, including the reaction process of tert-Butyl 6-nitro-3,4-dihydroisoquinoline-2(1H)-carboxylate(cas: 186390-79-4Related Products of 186390-79-4)

tert-Butyl 6-nitro-3,4-dihydroisoquinoline-2(1H)-carboxylate(cas: 186390-79-4) belongs to isoquinoline.Related Products of 186390-79-4 Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yau, Lorraine; Litchie, Brenda; Zahradka, Peter published their research in Experimental Cell Research on December 10 ,2004. The article was titled 《MIBG, an inhibitor of arginine-dependent mono(ADP-ribosyl)ation, prevents differentiation of L6 skeletal myoblasts by inhibiting expression of myogenin and p21cip1》.Formula: C10H11NO The article contains the following contents:

The development of skeletal muscle is controlled by a highly synchronized series of cellular events, and various signals from both inside and outside the cell play a role in the switch from multipotential mesodermal stem cells to muscle fibers. Meta-iodobenzylguanidine (MIBG), an inhibitor of mono(ADP-ribosyl)ation, has been shown to prevent terminal differentiation of skeletal myoblasts; however, its mechanism of action has not been established. We recently reported that MIBG is capable of preventing phenotypic modulation of smooth muscle cells by interfering with specific trans-acting factors [L. Yau, B. Litchie, S. Thomas, B. Storie, N. Yurkova, P. Zahradka, Endogenous mono-ADP-ribosylation mediates smooth muscle cell proliferation and migration via protein kinase N-dependent induction of c-fos expression. Eur. J. Biochem. 270 (2003) 101-110.]. We therefore examined the effect of MIBG on select myogenic regulatory factors known to control terminal differentiation. It was confirmed that MIBG, but not inhibitors of poly-ADP-ribose polymerase (3-aminobenzamide, PD128763), inhibits fusion of L6 skeletal myoblasts in a concentration-dependent manner. Moreover, inhibition by MIBG correlated with a failure to induce expression of myogenin and p21cip1, while levels of MyoD and MEF2 were unaffected. Time-of-addition studies revealed that MIBG also affected a late event possibly linked to cell fusion. Finally, arginine-dependent mono(ADP-ribosyl)transferase activity increased over the first 24 h of the differentiation period. These data support a role for arginine-dependent mono(ADP-ribosyl)transferase as an essential pos. regulator of differentiation in skeletal muscle cells that operates by modulating the expression of specific myogenic factors. The results came from multiple reactions, including the reaction of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Formula: C10H11NO)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline. Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. Formula: C10H11NO

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Arundel-Suto, Carla M.; Scavone, Sylvia V.; Turner, William R.; Suto, Mark J.; Sebolt-Leopold, Judith S. published an article in Radiation Research. The title of the article was 《Effects of PD 128763, a new potent inhibitor of poly(ADP-ribose) polymerase, on x-ray-induced cellular recovery processes in Chinese hamster V79 cells》.Reference of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one The author mentioned the following in the article:

The modifying effects of PD 128763 (3,4-dihydro-5-methyl-1(2H)-isoquinolinone) (I), a potent inhibitor of poly(ADP-ribose)polymerase, on radiation-induced cell killing were examined in Chinese hamster V79 cells. I has an IC50 value against the purified enzyme 50-fold lower than 3-aminobenzamide (3-AB), a widely used specific inhibitor of the enzyme. Exposure of exponentially growing cells to a noncytotoxic concentration (0.5 mM) of I for 2 h immediately following x-irradiation increased their radiation sensitivity, modifying both the shoulder and the slope of the survival curve. When recovery from sublethal damage and potentially lethal damage was examined in exponential and plateau-phase cells, resp., postirradiation incubation with 0.5 mM I not only to inhibited both these processes fully, but also enhanced further the level of radiation-induced cell killing. This is in contrast to the slight effect seen with the less potent inhibitor, 3-AB. The mechanism of radiosensitization by I is related to the potent inhibition of poly(ADP-ribose) polymerase by this compound After reading the article, we found that the author used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Reference of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.Reference of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Burkart, V.; Blaeser, K.; Kolb, H. published their research in Hormone and Metabolic Research on December 31 ,1999. The article was titled 《Potent β-cell protection in vitro by an isoquinolinone-derived PARP inhibitor》.Recommanded Product: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one The article contains the following contents:

Activation of the nuclear enzyme poly(ADP-ribose)polymerase (PARP) is a critical step in β-cell death in response to exposure with free radicals or other DNA damaging agents. Nicotinamide, a B vitamin, exerts its β-cell protective action primarily via its ability to block excessive PARP activity. We show here that the isoquinolinone derivative PD128763, a specific PARP inhibitor, provides protection from cell death in islet cells exposed in vitro to nitric oxide or oxygen radical generating compounds or to the β-cell toxin streptozotocin, at concentrations 100 times less than required for nicotinamide. Furthermore, while the protective action of nicotinamide is rapidly lost after washing of islet cells, the effects of PD128763 are more long lasting. Both compounds had little capacity to rescue damaged islet cells from subsequent lysis. We conclude that the isoquinolinone derivative PD128763 is superior to nicotinamide in enhancing the resistance of β-cells towards inflammatory attacks. After reading the article, we found that the author used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Recommanded Product: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline. Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. Recommanded Product: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem