申请人:Quibell Martin
公开号:US20090192322A1
公开(公告)日:2009-07-30
The present invention relates to a process for preparing a compound of formula (Ia), (Ib), (Ic) or (Id), or a pharmaceutically acceptable salt, hydrate, solvate, complex or prodrug thereof, said process comprising the steps of: (A) (i) treating a compound of formula (IVa), where R
48
is alkyl or tosyl, with an oxidising agent to form a compound of formula (Va); and (ii) converting said compound of formula (Va) to a compound of formula (Ia) or (Ic); or (B) (i) treating a compound of formula (IVb), where R
48
is alkyl or tosyl, with an oxidising agent to form a compound of formula (Vb); and (ii) converting said compound of formula (Vb) to a compound of formula (Ib) or (Id).
本发明涉及一种制备式(Ia)、(Ib)、(Ic)或(Id)化合物或其药学上可接受的盐、水合物、溶剂合物、复合物或前药的方法,该方法包括以下步骤:(A) (i)用氧化剂处理式(IVa)化合物,其中R48是烷基或甲苯磺酰基,以形成式(Va)化合物;(ii)将所述式(Va)化合物转化为式(Ia)或(Ic)化合物;或(B) (i)用氧化剂处理式(IVb)化合物,其中R48是烷基或甲苯磺酰基,以形成式(Vb)化合物;(ii)将所述式(Vb)化合物转化为式(Ib)或(Id)化合物。