Intermediate and Process of Preparation of Ecteinascidin Such as Ecteinascidines-583,597 Using Such Intermediate
申请人:Zhu Jieping
公开号:US20090171080A1
公开(公告)日:2009-07-02
The present invention concerns an intermediate of the following formula (I) in which R
1
and R
2
represent independently of each other a C
1
-C
12
alkyl group, a (C
1
-C
12
alkoxy)carbonyl group, optionally substituted by one, two or three halogen atom, a (C
2
-C
12
alkenyloxy)carbonyl group, an acyl group, a aryl(C
1
-C
12
)alkyl group, an arylalkoxy carbonyl group, a (C
1
-C
12
alkyl)sulfonyl group or an arylsulfonyl group, R
3
represents a O-protecting group, R
4
and R
5
represent independently of each other a hydrogen atom or a O-protecting group, R
6
represent a O-protecting group and R
7
represent a C
1
-C
12
alkyl group or —OR
6
and —OR
7
form together a group —OCH
2
O—. The present invention concerns also a process of preparation of the intermediate and its use for the preparation of Ecteinascidin 743 and Ecteinascidin-770.
本发明涉及以下式(I)的中间体,其中R1和R2独立地表示C1-C12烷基,(C1-C12烷氧)羰基基团,可选地被一、二或三个卤素原子取代的(C2-C12烯氧)羰基基团,酰基基团,芳基(C1-C12)烷基基团,芳基氧羰基基团,(C1-C12烷基)磺酰基或芳基磺酰基,R3表示O-保护基团,R4和R5独立地表示氢原子或O-保护基团,R6表示O-保护基团,R7表示C1-C12烷基或-OR6和-OR7共同形成- OCH2O-基团。本发明还涉及制备该中间体的方法及其用于制备Ecteinascidin 743和Ecteinascidin-770的用途。