首页>
外国专利>
16-OXYGENATED-20-METHYL-.DELTA.17(20) PREGNEN-21-OIC ACIDS, 16-OXYGENATED-17.alpha.,20.alpha.-METHYLENE-21-OIC ACIDS OF THE PREGNANE SERIES, THEIR ESTERS, AND PROCESS FOR THEIR PREPARATION
16-OXYGENATED-20-METHYL-.DELTA.17(20) PREGNEN-21-OIC ACIDS, 16-OXYGENATED-17.alpha.,20.alpha.-METHYLENE-21-OIC ACIDS OF THE PREGNANE SERIES, THEIR ESTERS, AND PROCESS FOR THEIR PREPARATION