申请人:FREDERIC Marc
公开号:US20110124899A1
公开(公告)日:2011-05-26
The Invention relates to a method for preparing a combretastatin (A): formula (I) in the form of a base or of an addition salt with an acid, which comprises coupling, in the presence of a base and of T3P, the salt of the (Z)-amino compound of formula (II) with a doubly protected L-serine derivative of formula (III) in which PG denotes a group protecting the amine function, so as to obtain the compound of formula (Z)-(Ib): formula (IV), then deprotecting and opening the ring of (Z)-(Ib) in the presence of an acid, so as to obtain the combretastatin (A) in the form of a salt; and, optionally, adding a base, so as to obtain the combretastatin (A) in the form of a base, the salt of the (Z)-amino compound having been obtained by enrichment of the salt of the amino compound of formula (V) in (Z) isomer.
本发明涉及一种制备康布雷他汀(A):式(I)的方法,其以碱基或与酸的加成盐的形式存在,包括在碱基和T3P存在下,将式(II)的(Z)-氨基化合物的盐与式(III)的双保护L-丝氨酸衍生物偶联,其中PG表示保护胺基的基团,以得到式(Z)-(Ib)的化合物:式(IV),然后在酸的存在下去保护和开放(Z)-(Ib)的环,以得到康布雷他汀(A)的盐形式;并且,可以加入碱基,以得到康布雷他汀(A)的碱基形式,式(V)的氨基化合物的盐的富集中获得(Z)异构体的氨基化合物的盐。