[EN] CATHEPSIN CYSTEINE PROTEASE INHIBITORS<br/>[FR] INHIBITEURS DE PROTÉASES À CYSTÉINE DE TYPE CATHÉPSINES
申请人:MERCK SHARP & DOHME
公开号:WO2015123089A1
公开(公告)日:2015-08-20
This invention relates to a novel class of compounds which are cysteine protease inhibitors, including but not limited to, inhibitors of cathepsins K, L, S and B. These compounds are useful for treating diseases in which inhibition of bone resorption is indicated, such as osteoporosis.
Cyclisation of acetylenecarboxylic acid. Synthesis of γ-methylenebutyrolactones
作者:Makoto Yamamoto
DOI:10.1039/p19810000582
日期:——
Various γ-exo-methylenebutyrolactones have been synthesized in excellent yield by the cyclisation of acetylenecarboxylicacids in the presence of a catalytic amount of mercury(II) oxide. Cyclisation of terminal acetylene compounds[e.g.(1a)–(1e)]proceeded regioselectively to give γ-exo-methylenebutyrolactones as the sole product. Disubstituted acetylenes [(1f)–(1i)] also gave the (Z)-configurational