CRYSTAL OF 6,7-UNSATURATED-7-CARBAMOYL MORPHINAN DERIVATIVE AND METHOD FOR PRODUCING THE SAME
申请人:Tamura Yoshinori
公开号:US20130231485A1
公开(公告)日:2013-09-05
Stable crystalline forms of a compound represented by the formula (IA):
an acid addition salt, and/or a solvate thereof are provided by the present invention. Said crystalline forms are extremely useful as materials for preparing medicines. Novel processes for preparing 6,7-unsaturated-7-carbamoyl morphinan derivatives are also provided by the present invention.