A bisphosphonic acid derivative of the general formula (I):
wherein A is an optionally substituted cyclic group; R1 is hydrogen atom or a lower alkanoyl group; R2, R3, R4 and R5 are the same or different and are hydrogen atom or a lower alkyl group; m is 0, 1 or 2; and n is an integer from 2 to 10, or a salt thereof is disclosed. A process for its production and a bone resorption inhibitor containing the compound of the general formula (I) or a salt thereof are also disclosed.
通式(I)的
双膦酸衍
生物:
其中 A 是任选取代的环状基团;R1 是氢原子或低级烷酰基;R2、R3、R4 和 R5 是相同或不同的氢原子或低级烷基;m 是 0、1 或 2;n 是 2 至 10 的整数。此外,还公开了其生产工艺和含有通式(I)化合物或其盐的骨吸收
抑制剂。