Invention Grant
US07692034B2 Process for the preparation of 7-amino syn 3,5-dihydroxy heptanoic acid derivatives via 6-cyano syn 3,5-dihydroxy hexanoic acid derivatives 失效
通过6-氰基顺式3,5-二羟基己酸衍生物制备7-氨基顺式3,5-二羟基庚酸衍生物的方法

Process for the preparation of 7-amino syn 3,5-dihydroxy heptanoic acid derivatives via 6-cyano syn 3,5-dihydroxy hexanoic acid derivatives
Abstract:
The invention relates to novel synthesis methods for the preparation of the intermediates, which are suitable for the preparation of statin derivatives, especially to novel synthesis methods of the intermediate of formula VI wherein Ra and Rc are each independently of the other hydrogen or a hydroxy-protecting group or together are a bridging hydroxy-protecting group, and Rb is a carboxy-protecting group, which methods are carried out by conversion of the intermediate of formula XIX wherein Ra and Rc are each independently of the other hydrogen or a hydroxy-protecting group, and Rb is a carboxy-protective group.
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