作者: Atsuo Hazato , Koji Tomimori , Masayasu Tabe , Osami Takenouchi , Yoshiaki Azuma
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摘要: A lactone compound, useful as an osteogenetic accelerator, having the formula (I): ##STR1## wherein n is zero or 1 and m 1, provided that both are not at same time, a stereoisomer thereof 23- and/or 25-positions any mixture production process thereof.