Chemistry is traditionally divided into organic and inorganic chemistry. HPLC of Formula: C12H15NO2, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 4721-98-6
Studies on the Syntheses of Heterocyclic Compounds and Natural Products. 1000. Double Enamine Annelation of 3,4-Dihydro-1-methyl-beta-carboline and Isoquinoline Derivatives with 6-Methyl-2-pyrone-3,5-dicarboxylates and Its Application for the Synthesis of (+/-)-Camptothecin
6-Methyl-2-pyrone-3,5-dicarboxylates 8 and 9 were prepared by the reaction of dimethyl (methoxymethylene)malonate and acetoacetates in the presence of sodium hydride followed by an acid treatment.Reaction of the pyrones 8 and 9 with 3,4-dihydro-1-methylisoquinolines 10 and 11 and beta-carboline (16) produced the tetra (14 and 15) and pentacyclic compounds (17 and 18) by a double annelation. 14-(tert-Butoxycarbonyl)-12b,2-(epoxyetheno)-1,2,3,6,7,12b-hexahydro-3-(methoxycarbonyl)-13-methylindolo<2,3-a>quinolizidin-4-one (18), prepared by the above double enamine annelation m ethod, was converted into the acetate 34 which previously had been transformed into (+/-)-camptothecin (1a) in two steps.
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Reference£º
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem