SEMI-SYNTHETIC ROUTE FOR THE PREPARATION OF PACLITAXEL, DOCETAXEL, AND 10-DEACETYLBACCATIN III FROM 9-DIHYDRO-13-ACETYLBACCATIN III
申请人:LIU Jian
公开号:US20070293687A1
公开(公告)日:2007-12-20
A novel semisynthetic route has been provided in the preparation of docetaxel and paclitaxel. This new process involves the conversion of 9-dihydro-13-acetylbaccatinIII to docetaxel and paclitaxel by the step of converting 9-dihydro-13-acetylbaccatin III into 7-O-triethylsilyl-9,10-diketobaccatin III, and adding docetaxel and paclitaxel side chain precursors, respectively, to form a new class of taxane intermediates, such as 7-O-triethylsilyl-9,10-diketodocetaxel and 7-O-triethylsilyl-9,10-diketopaclitaxeltaxel. These new intermediates then by a series reduction, acetylation of the 10-hydroxyl position for paclitaxel and finally deprotection to yield docetaxel and paclitaxel, the most important anti-cancer drugs.
一种新的半合成路线已经提供在紫杉醇和紫杉醇的制备中。这个新的过程涉及将9-二氢-13-乙酰基紫杉醇III转化为紫杉醇和紫杉醇的步骤,即将9-二氢-13-乙酰基紫杉醇III转化为7-O-三乙基硅基-9,10-二酮紫杉醇III,并分别添加紫杉醇和紫杉醇的侧链前体,形成一类新的紫杉烷中间体,如7-O-三乙基硅基-9,10-二酮紫杉醇和7-O-三乙基硅基-9,10-二酮紫杉醇。然后通过一系列还原、对紫杉醇的10-羟基位置的乙酰化,最终去保护,得到紫杉醇和紫杉醇,这是最重要的抗癌药物。