PROCESS FOR PREPARING INDOLOPYRROLOCARBAZOLE DERIVATIVES, INTERMEDIATES THEREFOR, AND PREPARATION PROCESS OF THE INTERMEDIATES
申请人:BANYU PHARMACEUTICAL CO., LTD.
公开号:EP1258490A1
公开(公告)日:2002-11-20
This invention relates to a process for preparation of an indolopyrrolocarbazole derivative [I] by treating a compound [V] with a base in an inert solvent to prepare a compound [IV], reacting the obtained compound [IV] with a compound [III] to prepare a compound [II] and then removing the protective groups of the compound [II], the preparation intermediates compound [II], compound [III] and compound [IV], and processes for preparation of the compound [III].
wherein Y1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a phenyl group, a benzyloxymethyl group or an aralkyl group, R1, R2, R3, R4, R5 and R6 may be the same or different and each represent a protective group of a hydroxyl group, R7 and R8 may be the same or different and each represent a hydrogen atom or a protective group of a hydroxyl group, and X represents an acid molecule.
This invention provides a safe and easy industrial preparation process of the indolopyrrolocarbazole derivative [I] useful as an antitumor agent.
本发明涉及一种通过在惰性溶剂中用碱处理化合物[V]以制备化合物[IV],将得到的化合物[IV]与化合物[III]反应以制备化合物[II],然后除去化合物[II]的保护基团,制备中间体化合物[II]、化合物[III]和化合物[IV],以及制备化合物[III]的吲哚吡咯并咔唑衍生物[I]的工艺。
其中 Y1 代表氢原子、具有 1 至 4 个碳原子的烷基、苯基、苄氧甲基或芳烷基,R1、R2、R3、R4、R5 和 R6 可以相同或不同,且各自代表羟基的保护基,R7 和 R8 可以相同或不同,且各自代表氢原子或羟基的保护基,X 代表酸分子。
本发明提供了一种安全简便的工业化制备吲哚并吡咯咔唑衍生物[I]的工艺,该衍生物可用作抗肿瘤剂。