Tag: M.W=150-200

Akramov, Davlat Kh. published the artcileComparative study on the chemical composition and biological activities of the essential oils of three Lagochilus species collected from Uzbekistan, Recommanded Product: 5-Methyl-2-phenylhex-2-enal, the main research area is phytochem essential oil Lagochilus species antioxidant enzyme inhibitor; Folk medicine; GC-MS; Lagochilus; antioxidant; enzyme inhibition; essential oil.

Lagochilus species are mainly distributed in Central Asia and widely used in folk medicine as a sedative and haemostatic. The present investigation reports on the extraction by hydrodistillation and the chem. composition of three Lagochilus species (L. gypsaceus, L. inebrians and L. setulosus) essential oils from Uzbekistan. The chem. composition of these essential oils was determined by GC-MS. The results showed that the studied essential oils are made up mainly of linalool (11.97%), β-ionone (11.75%), trans-chrysanthenyl acetate (7.15%), α-terpineol (7.40%) for L. gypsaceus; trans-chrysanthenyl acetate (9.40%), eugenol (7.01%), trans-verbenol (3.85%), bicyclo[3.1.1]hept-3-en-2-one (3.76%), pinocarvone (3.43%) for L. inebrians; and finally 2,4-bis(1,1-dimethylethyl)phenol (19.78%), bicyclo[3.1.1]hept-2-en-4-ol (5.43%), hexadecanoic acid (5.39%), limonene (5.19%), 2-hexenal (5.03%) for L. setulosus. The best antioxidant and tyrosinase inhibitory activity was observed for the essential oil of L. inebrians. However, L. setulosus essential oil exhibited the strongest inhibitory effect against amylase.

Natural Product Research published new progress about Antioxidants. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Recommanded Product: 5-Methyl-2-phenylhex-2-enal.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Ge published the artcileDesign and Green Synthesis of Piperlongumine Analogs and Their Antioxidant Activity against Cerebral Ischemia-Reperfusion Injury, Formula: C9H10O3, the main research area is piperlongumine analog green synthesis antioxidant cerebral ischemia reperfusion injury; structure activity piperlongumine analog cerebral ischemia reperfusion injury; Michael acceptor; Piperlongumine analogs; antioxidation; cerebral ischemia-reperfusion injury; green synthesis; neuroprotection; stroke.

The supplementation of exogenous antioxidants to scavenge excessive reactive oxygen species (ROS) is an effective treatment for cerebral ischemia reperfusion injury (CIRI). Piperlongumine (PL) is a kind of natural product which has great potential as a neuroprotective agent, but it also has obvious neurotoxicity. Moreover, its neuroprotective effects remain to be improved. In this study, a series of novel PL analogs were designed on the foundation of the screened low-toxic diketene skeleton with antioxidation and the 3,4,5-trimethoxyphenyl group, which might increase the antioxidant activity of PL. The cytotoxicity and activity tests on a series of PL analogs I [R1 = 3,4,5-(MeO)3C6H2, R2 = 2,4-Cl2C6H3, 2-HOC6H4, piperidin-1-yl, etc.; R1 = H, R2 = 3,4,5-(MeO)3C6H2], which were synthesized by a novel green synthesis method, indicated that all of these compounds without obvious toxicity have remarkable antioxidant effects, especially compared with diketene skeletons and PL. The cytoprotection of the active compound also decreased significantly when the carbon-carbon double bonds of the mol. skeleton were reduced. More importantly, further study revealed that compound I [R1 = 3,4,5-(MeO)3C6H2, R2 = 2,4,6-(MeO)3C6H2], which has the best activity, can confer protection for cells against oxidative stress and attenuate brain injury in rats. Overall, our findings provide a promising drug candidate for the treatment of CIRI and guide the further development of drug research in oxidative stress-mediated diseases.

ACS Chemical Neuroscience published new progress about Antioxidants. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Parimala, K. published the artcileExperimental and theoretical spectroscopic properties of 2,3-Dimethoxybenzaldehyde using quantum chemical method, COA of Formula: C9H10O3, the main research area is dimethoxybenzaldehyde mol structure vibrational frequency atomic charge.

The interpretation of active functional groups have been characterized by FT-IR and FT-Raman spectroscopies with the help of potential energy distributions. Hartree-Fock (HF) calculations of the 2,3-Dimethoxybenzaldehyde (DMBA) carried out by 6-311++G(d,p) basis set. Hyperconjugative associations present in the particle were likewise evaluated utilizing normal bond orbital (NBO) examination The condensed Fukui functions explored the sites available for nucleophilic and electrophilic attack in the form of local based descriptors.

Materials Today: Proceedings published new progress about Atomic charge. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Han published the artcileBromine radical as a visible-light-mediated polarity-reversal catalyst, Related Products of isoquinoline, the main research area is vinyl arene hydroacylation aldehyde deuteration bromine radical reaction process; Chemistry; green chemistry; organic chemistry.

Polarity-reversal catalysts enable otherwise sluggish or completely ineffective reactions which are characterized by unfavorable polar effects between radicals and substrates. We herein disclose that when irradiated by visible light, bromine can behave as a polarity-reversal catalyst. Hydroacylation of vinyl arenes, a three-component cascade transformation and deuteration of aldehydes were each achieved in a metal-free manner without initiators by using inexpensive N-bromosuccinimide as the precatalyst. Light is essential to generate and maintain the active bromine radical during the reaction process. Another key to success is that HBr can behave as an effective hydrogen donor to turn over the catalytic cycles.

iScience published new progress about Bond cleavage. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Ping published the artcileConsumer preference of Chinese traditional fermented fava pastes, Related Products of isoquinoline, the main research area is fava paste ferment consumer preference chinese tradition.

The present study was designed to investigate the consumer preference and the quality attributes of five brands of Chinese traditional first-grade fava pastes, following which their quality differences were evaluated in order to identify the key drivers or factors, which can be applied to explain the behavior of consumer preferences. Consumers ranked these samples based on the 9-point method. An obvious preference for sample P1 was observed with 35% of participants settling on extremely liked option, giving the said sample the highest overall preference score of 7.8 ± 0.2. Further sensory and physicochem. properties, and volatiles were conducted to identify the major drivers of the consumer behavior. Sensory evaluation showed that sample P1 also produced the highest overall sensory score (85 ± 3). Though all the samples exhibited similar physicochem. attributes, significant differences were observed in the species and the concentration of volatile compounds Accordingly, the content of free amino acids (FAAs) and low-mol.-weight (MW) fraction (â‰? kDa) represented the trend that fell in line with sensory score. PLS2 correlation anal. indicated that physicochem. indexes and volatiles could be used to explain the consumer preference, which was likely to be synergistically affected by FAAs, protein, amino nitrogen, dietary fiber, Ca, P, Fe, δ-Ε, and some volatiles, especially the pos. drivers of FAAs and low MW proportion to sample P1. The work would not only provide valuable information for grading of fava pastes in the industry but also guide actual producing toward the expectation of consumers, especially increasing those pos. drivers.

International Journal of Food Properties published new progress about Dietary fiber. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ye, Jing published the artcileDifferentiation of two types of pu-erh teas by using an electronic nose and ultrasound-assisted extraction-dispersive liquid-liquid microextraction-gas chromatography-mass spectrometry, Application In Synthesis of 21834-92-4, the main research area is pu erh tea electronic nose UAE DLLME GC MS.

It is a challenging task to discriminate raw pu-erh tea, notably aged raw tea, from ripened pu-erh tea, both of which are the two primary types of pu-erh teas, only based on the taster’s sensory evaluation. In the current study, a workflow was proposed to differentiate those two clusters of pu-erh teas, as well as to point out and verify the markers responsible for the discrimination. Initially, an electronic nose was utilized for the rapid discrimination. Then, an efficient method based on ultrasound-assisted extraction-dispersive liquid-liquid microextraction-gas chromatog.-mass spectrometry (UAE-DLLME-GC-MS) coupled with chemometric methods was developed to disclose the metabolic profiles and pinpoint the markers for discrimination. Afterwards seven methoxyphenolic derivatives were simultaneously determined in both pu-erh teas. The role of volatile components in the classification of pu-erh teas was proved using the electronic nose (E-nose). Diverse parameters were optimized for UAE-DLLME-GC-MS, and a total of 84 volatile constituents were detected and identified. The methoxyphenolic derivatives as well as some alc. derivatives were screened out as the primary markers by principle component anal., and significant differences were revealed for the contents of methoxyphenolic compounds in these two types of pu-erh teas. Taken together, methoxyphenolic compounds as well as alc. derivatives were found and verified as the markers for the differentiation between raw and ripened pu-erh teas, and either an E-nose or UAE-DLLME-GC-MS could be applied as a reliable tool to achieve the discrimination.

Analytical Methods published new progress about Food analysis. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Application In Synthesis of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Galmes, Sebastia published the artcileAbsorption, Distribution, Metabolism, and Excretion of the Main Olive Tree Phenols and Polyphenols: A Literature Review, Formula: C9H10O3, the main research area is review olive tree phenol polyphenol absorption metabolism excretion; bioavailability; hydroxytyrosol; metabolic reactions; oleuropein; olive polyphenols; toxicity.

The effects of olive tree (poly)phenols (OPs) are largely dependent upon their bioavailability and metabolization by humans. Absorption, distribution, metabolism, and excretion (ADME) are fundamental for the nutritional efficacy and toxicol. impact of foods containing OPs. This review includes studies on the administration of hydroxytyrosol (HT), oleuropein (Ole), or other OPs and foods, products, or mixtures that contain them. Briefly, data from in vivo studies indicate that OPs are absorbable by intestinal cells. Both absorption and bioavailability depend upon each compound and/or the matrix in which it is contained. OPs metabolism begins in enterocytes and can also continue in the liver. Metabolic phase I mainly consists of the hydrolysis of Ole, which results in an increase in the HT content. Phase II metabolic reactions involve the conjugation of (poly)phenols mainly with glucuronide and sulfate groups. This review offers a complete perspective of the ADME processes of OPs, which could support the future nutritional and/or toxicol. studies in this area.

Journal of Agricultural and Food Chemistry published new progress about Olea europaea. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Nakamura, Kenji published the artcileA 90-day subchronic toxicity study of 5-methyl-2-phenyl-2-hexenal in F344 rats, Formula: C13H16O, the main research area is subchronic toxicity MPH adverse effects; 5-Methyl-2-phenyl-2-hexenal; F344 rats; Flavoring agent; Subchronic toxicity.

5-Methyl-2-phenyl-2-hexenal (MPH) has been used as a flavoring agent. In the present study, we performed a subchronic toxicity study in male and female F344 rats with oral administration of MPH by gavage at 0, 8, 24 and 70 mg/kg body weight (BW)/day for 90 days. No mortality or clin. signs were observed during the exptl. period. Body weight and food consumption for all treated groups of both sexes were essentially the same as for the resp. control groups. Hematol. examination demonstrated significant decreases in monocyte counts for females given 24 and 70 mg/kg BW/day. However, these changes were not substantial and no related histopathol. changes were observed, suggesting that these changes were not toxicol. significant. Among organ weights, the absolute and/or relative weights of testes and liver were significantly increased in the 70 mg/kg BW/day groups of males and females, resp., but no related histopathol. changes were observed, suggesting that these changes did not reflect adverse effects. In addition, no treatment-related histopathol. changes were observed for any of the tissues examined Based on the overall data, the no-observed-adverse-effect level (NOAEL) for MPH was determined to be 70 mg/kg BW/day, the highest dose tested, in both male and female rats.

Food and Chemical Toxicology published new progress about Adrenal gland. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Formula: C13H16O.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Hughes, David T. published the artcileFunctional and nonfunctional forms of CquiOR91, an odorant selectivity subunit of Culex quinquefasciatus, Related Products of isoquinoline, the main research area is Culex odorant receptors 91 selectivity; Xenopus oocytes; electrophysiology; insect; olfaction; polymorphism; receptor.

In Culex quinquefasciatus, CquiOR91 is the ortholog of 2 larvae-specific odorant receptors (ORs) from Anopheles gambiae (AgamOr40, previously shown to respond to several odorant ligands including the broad-spectrum repellent N,N-diethyl-3-methylbenzamide, DEET) and Aedes aegypti (AaegOr40). When we cloned full-length CquiOR91 from a Culex quinquefasciatus larval head RNA sample, we found 2 alleles of this OR, differing at 9 residues. Functional anal. using the Xenopus oocyte expression system and 2-electrode voltage clamp electrophysiol. revealed one allele (CquiOR91.1) to be nonfunctional, whereas the other allele (CquiOR91.2) was functional. Receptors formed by CquiOR91.2 and CquiOrco responded to (-)-fenchone, (+)-fenchone, and DEET, similar to what has been reported for AgamOr40. We also identified 5 novel odorant ligands for the CquiOR91.2 + CquiOrco receptor: 2-isobutylthiazole, veratrole, eucalyptol, d-camphor, and safranal, with safranal being the most potent. To explore possible reasons for the lack of function for CquiOR91.1, we generated a series of mutant CquiOR91.2 subunits, in which the residue at each of the 9 polymorphic residue positions was changed from what occurs in CquiOR91.2 to what occurs in CquiOR91.1. Eight of the 9 mutant versions of CquiOR91.2 formed functional receptors, responding to (-)-fenchone. Only the CquiOR91.2 Y183C mutant was nonfunctional. The reverse mutation (C183Y) conferred function on CquiOR91.1, which became responsive to (-)-fenchone and safranal. These results indicate that the “”defect”” in CquiOR91.1 that prevents function is the cysteine at position 183.

Chemical Senses published new progress about Aedes aegypti. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Siccama, Joanne W. published the artcileThe effect of partial replacement of maltodextrin with vegetable fibres in spray-dried white asparagus powder on its physical and aroma properties, Application In Synthesis of 21834-92-4, the main research area is maltodextrin vegetable fiber asparagus spray drying aroma; Asparagus fibres; GC–MS; Maltodextrin; Metabolomics; Spray drying; Volatiles retention.

Asparagus concentrate was spray-dried in different carrier formulations in which maltodextrin was partially replaced by cellulose-based carriers, i.e. asparagus fiber, citrus fiber or microcrystalline cellulose. This replacement was limited to a maximum level of 3% weight/weight for asparagus and citrus fibers, and 10% weight/weight for microcrystalline cellulose, due to fiber insolubility and increased viscosity of the feed. Powders obtained from feed solutions with an initial solids content of 40% weight/weight showed better phys. properties and aroma retention than 30% weight/weight Partial replacement of maltodextrin by cellulose-based carriers resulted in powders with similar phys. properties as the control and did not detrimentally influence the aroma profiles as analyzed by headspace solid-phase microextraction and gas chromatog.-mass spectrometry. This research shows that fiber obtained from asparagus waste streams could potentially be used as a carrier to produce spray-dried asparagus powder with retained key asparagus volatiles such as 2-methoxy-3-iso-Pr pyrazine.

Food Chemistry published new progress about Agglomeration. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Application In Synthesis of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem