摘要 |
Compounds of the formula II: wherein R1 and R2 are independently H, F or CH3; or R1 forms an ethynyl bond and R2 is H or optionally substituted C3-C6 cycloalkyl; R3 is (optionally substituted) C1-C3 alkyl or C3-C6 cycloalkyl; R4 is methyl or fluoro; m is 0-2; E is optionally substituted thiazolyl; A1 and A2 together define an optionally substituted piperazine or piperidine ring have utility in the treatment of osteoporosis, osteoarthritis, rheumatoid arthritis or bone metastases.
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