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.
本发明提供了由式(IA)表示的化合物的稳定晶体形态,酸盐加合物和/或溶剂化物。所述晶体形态非常有用,可用作制备药物的材料。本发明还提供了制备6,7-不饱和-7-
氨基甲酰
吗啡类衍
生物的新工艺。