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【结 构 式】

【分子编号】34614

【品名】(2S,4S)-2-acetyl-2,4,5,7,12-pentahydroxy-3,4-dihydro-1,6,11(2H)-naphthacenetrione

【CA登记号】

【 分 子 式 】C20H14O9

【 分 子 量 】398.32576

【元素组成】C 60.31% H 3.54% O 36.15%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(X)

The reaction of daunomycinone (IX) with AlCl3 in dichloromethane gives 4-demethyldaunomycinone (X), which is ketalized with ethylene glycol as before yielding the dioxolane (XI). The selective sulfonation of (XI) with TsCl, DIEA and DMAP in pyridine affords the 4-tosyloxy derivative (XII), which is treated with 4-methoxybenzylamine (XIII) in pyridine providing the secondary benzylamine (XIV). Elimination of the benzyl protecting group of (XIV) with TFA gives 4-amino-4-demethoxydaunomycinone ethylene ketal (XV), which is deaminated by reaction with TFA, NaNO2 and H3PO2 to give 4-demethoxydaunomycinone (XVI). Finally, this compound is submitted to fermentation with Streptomyces peucetius corneus, S. Peucetius caesius, S. Caeruleus, S. Peucetius, S. Coeruleorubidus, and other chemical or radio-induced mutants thereof.

1 Francalanci, F.; Martinengo, T.; de Bernardinis, S.; Cabri, W. (Pharmacia Corp.); Process for the preparation of 4-demethoxydaunomycinone, the aglycone of 4-demethoxy-daunorubicin. EP 0328399 .
2 Mitscher, L.A.; Lednicer, D. (Pharmacia Corp.); Biosynthesis of simplified anthracyclines. US 4471052 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
11295 Polyethylene glycol;1,2-Ethanediol;Monoethylene glycol; Ethylene glycol 107-21-1 C2H6O2 详情 详情
(IX) 34613 (2S,4S)-2-acetyl-2,4,5,12-tetrahydroxy-7-methoxy-3,4-dihydro-1,6,11(2H)-naphthacenetrione C21H16O9 详情 详情
(X) 34614 (2S,4S)-2-acetyl-2,4,5,7,12-pentahydroxy-3,4-dihydro-1,6,11(2H)-naphthacenetrione C20H14O9 详情 详情
(XI) 34615 (2R,4S)-2,4,5,7,12-pentahydroxy-2-(2-methyl-1,3-dioxolan-2-yl)-3,4-dihydro-1,6,11(2H)-naphthacenetrione C22H18O10 详情 详情
(XII) 34616 (8R,10S)-6,8,10,11-tetrahydroxy-8-(2-methyl-1,3-dioxolan-2-yl)-5,7,12-trioxo-5,7,8,9,10,12-hexahydro-1-naphthacenyl 4-methylbenzenesulfonate C29H24O12S 详情 详情
(XIII) 15098 4-Methoxybenzylamine; (4-Methoxyphenyl)methanamine 2393-23-9 C8H11NO 详情 详情
(XIV) 34617 (2R,4S)-2,4,5,12-tetrahydroxy-7-[(4-methoxybenzyl)amino]-2-(2-methyl-1,3-dioxolan-2-yl)-3,4-dihydro-1,6,11(2H)-naphthacenetrione C30H27NO10 详情 详情
(XV) 34618 (2R,4S)-7-amino-2,4,5,12-tetrahydroxy-2-(2-methyl-1,3-dioxolan-2-yl)-3,4-dihydro-1,6,11(2H)-naphthacenetrione C22H19NO9 详情 详情
(XVI) 34610 (2S,4S)-2-acetyl-2,4,5,12-tetrahydroxy-3,4-dihydro-1,6,11(2H)-naphthacenetrione C20H14O8 详情 详情
Extended Information