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【结 构 式】

【分子编号】50975

【品名】(4S)-9-(2-bromoethoxy)-4,11-diethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione

【CA登记号】

【 分 子 式 】C24H23BrN2O5

【 分 子 量 】499.3611

【元素组成】C 57.73% H 4.64% Br 16% N 5.61% O 16.02%

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:(III)

Alkylation of 7-ethyl-10-hydroxycamptothecin (I) with 1,2-dibromoethane (II) under Williamson's ether synthesis conditions furnished the bromoethyl ether (III). Subsequent regioselective nitration of (III) provided the desired 9-nitro compound (IV), which was further reduced to the corresponding amine (V) by using SnCl2 in concentrated HCl. Finally, cyclization of the bromo amine (V) to give the title hexacyclic compound was carried out either in the presence of KI and K2CO3 in refluxing acetone or on standing in a DMSO solution at room temperature.

1 Kim, D.-K.; et al.; Synthesis and biological evaluation of novel A-ring modified hexacyclic camptothecin analogues. J Med Chem 2001, 44, 10, 1594.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 10819 (4S)-4,11-Diethyl-4,9-dihydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione; 7-Ethyl-10-hydroxycamptothecin C22H20N2O5 详情 详情
(II) 10252 1,2-Dibromoethane; Ethylene dibromide 106-93-4 C2H4Br2 详情 详情
(III) 50975 (4S)-9-(2-bromoethoxy)-4,11-diethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione C24H23BrN2O5 详情 详情
(IV) 50976 (4S)-9-(2-bromoethoxy)-4,11-diethyl-4-hydroxy-10-nitro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione C24H22BrN3O7 详情 详情
(V) 50977 (4S)-10-amino-9-(2-bromoethoxy)-4,11-diethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione C24H24BrN3O5 详情 详情
Extended Information