申请人:Skattebol Lars
公开号:US20110207967A1
公开(公告)日:2011-08-25
Using a combination of Kumada, Suzuki and Biellmann chemistry, various menaquinones can synthesised rapidly and with stereochemical integrity offering a new way of preparing these vitamin K2 components for the pharmaceutical market. In one embodiment a process for the preparation of a compound of formula (I) is defined including a step in which (i) a compound of formula (II) is reacted formula (III) wherein R is an alkyl group; LG is a leaving group; m is an integer from 0 to 8; n is an integer of from 0 to 9; and X is hydrogen, halide, hydroxyl or protected hydroxyl; in the presence of a copper, nickel or palladium catalyst.
通过 Kumada、Suzuki 和 Biellmann 化学反应的组合,可以快速合成各种维生素K2成分的甲萘醌,具有立体化学完整性,为制备这些成分进入药品市场提供了新的途径。在一种实施例中,定义了一种制备公式(I)化合物的过程,其中包括以下步骤:(i)在铜、镍或钯催化剂的存在下,将公式(II)化合物和公式(III)化合物反应,其中 R 是烷基;LG 是离去基团;m 是从0到8的整数;n 是从0到9的整数;X 是氢、卤素、羟基或保护羟基。