申请人:Centre National de la Recherche Scientifique
(CNRS)
公开号:EP1792904A1
公开(公告)日:2007-06-06
The present invention concerns an intermediate of the following formula I
in which R1 and R2 represent independently of each other a C1-C12 alkyl group, a (C1-C12 alkoxy)carbonyl group, optionally substituted by one, two or three halogen atom, a (C2-C12 alkenyloxy) carbonyl group, an acyl group, a aryl(C1-C12)alkyl group, an arylalkoxy carbonyl group, a (C1-C12 alkyl)sulfonyle group or an arylsulfonyl group and R3 represents a O-protecting group.
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分别独立地表示C1-C12烷基,(C1-C12烷氧基)羰基,可选地被一个、两个或三个卤素原子取代的(C2-C12烯氧基)羰基,酰基,芳基(C1-C12)烷基,芳基氧羰基,(C1-C12烷基)磺酰基或芳基磺酰基,R3表示O-保护基。本发明还涉及中间体的制备方法及其用于制备Ecteinascidin 743和Ecteinascidin-770。