申请人:FRESENIUS KABI ONCOLOGY LIMITED
公开号:US20140121383A1
公开(公告)日:2014-05-01
The present invention relates to an improved process for the synthesis of bendamustine, in particular, bendamustine hydrochloride of the formula (VI) and its intermediate 1-Methyl-5-[bis(2-chloroethyl)amino]-1H-benzimidazol-2-yl]lithium butanoate of formula (V), both having a purity of ≧99%, which is simple, convenient, economical, does not use hazardous chemicals and industrially viable.
本发明涉及一种改进的苯达莫司汀合成工艺,特别是苯达莫司汀盐酸盐(化学式(VI))及其中间体1-甲基-5-[双(2-氯乙基)氨基]-1H-苯并咪唑-2-基]锂丁酸酯(化学式(V)),两者纯度≧99%,该工艺简单、方便、经济,不使用危险化学品且具有工业可行性。