CHEMISTRY LETTERS, pp. 805-808, 1988. 1988 The Chemical Society of Japan 3-Substituted-Y"-butyrolactones from 5-Trimethylsilyl-2- cyclohexenone. Synthesis of (-)-Enterolactone Morio ASAOKA,* Naoaki FUJII, Kunihisa SHIMA, and Hisashi TAKEI Department of Life Chemistry, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 227 1,4-Adducts of 5-trimethylsilyl-2-cyclohexenone (1) with Grignard reagents were converted to various ...