[EN] NOVEL PROCESS FOR THE PREPARATION OF CIS-NUCLEOSIDE DERIVATIVE<br/>[FR] NOVEAU PROCEDE DE PREPARATION DE DERIVE DE CIS-NUCLEOSIDE
申请人:MATRIX LAB LTD
公开号:WO2011095987A1
公开(公告)日:2011-08-11
The present invention relates to an improved process for the preparation of cis-nucleoside derivative of formula-1 involving chlorination of the compound of formula-2 followed by reaction with compound of formula-3 in presence of a base to get compound of formula-4, reacting the compound of formula-4 with an alkyl halide (RiX) to get a quaternary ammonium salt then with cytosine derivative of formula-5 to provide the compound of formula-6, optionally de-protecting the compound of formula-6 to the compound of formula-7, reducing compound of formula-7 with metal catalyst in presence of a buffer solution, then adding an organic acid to get the compound of formula-8, and converting the compound of formula-8 to cis-nucleoside derivative of formula-1. The present invention further relates to novel cis-nucleoside derivative of formula-8. The present invention also relates to a pharmaceutical composition comprising cis-nucleoside derivative of formula-1 with excipients.
本发明涉及一种改进的过程,用于制备式-1的顺式核苷衍生物,包括将式-2的化合物进行氯化,然后与式-3的化合物在碱的存在下发生反应得到式-4的化合物,将式-4的化合物与烷基卤化物(RiX)反应得到季铵盐,然后与式-5的胞嘧啶衍生物反应得到式-6的化合物,可选择性地去保护式-6的化合物得到式-7的化合物,用金属催化剂在缓冲溶液中还原式-7的化合物,然后加入有机酸得到式-8的化合物,并将式-8的化合物转化为式-1的顺式核苷衍生物。本发明还涉及新型式-8的顺式核苷衍生物。本发明还涉及一种包含式-1的顺式核苷衍生物与赋形剂的药物组合物。