申请人:Kyorin Pharmaceutical Co., Ltd.
公开号:US06066742A1
公开(公告)日:2000-05-23
Indole derivatives shown by the formulae (1), (2a) and (2b) ##STR1## (wherein R.sup.1 is a protecting group for amino group; R.sup.2 is a protecting group for hydroxyl group; R.sup.3 is a protecting group for hydroxyl group; R.sup.4 is a C.sub.1 -C.sub.6 linear or branched lower alkyl group, or benzyl group), and pyrroloindole derivatives shown by formula (3) ##STR2## (wherein R.sup.1 is a protecting group for amino group; R.sup.2 is a protecting group for hydroxyl group; R.sup.3 is a protecting group for hydroxyl group; R.sup.4 is a C.sub.1 -C.sub.6 linear or branched lower alkyl group, or benzyl group), both of which are intermediates for duocarmycin SA, which is expected to be used as an anticancer agent, and derivatives thereof; and a method for producing the same.
式(1)、(2a)和(2b)所示的吲哚衍生物,其中:R1代表氨基保护基;R2代表羟基保护基;R3代表羟基保护基;R4代表C1-C6线性或支链低碳基或苄基;以及式(3)所示的吡咯吲哚衍生物,其中:R1代表氨基保护基;R2代表羟基保护基;R3代表羟基保护基;R4代表C1-C6线性或支链低碳基或苄基。这些化合物均为duocarmycin SA的中间体,duocarmycin SA被期望用作抗癌剂,还公开了其衍生物的制备方法。