作者:Shunya Takahashi、Narihito Ogawa、Hiroyuki Koshino、Tadashi Nakata
DOI:10.1021/ol0508126
日期:2005.6.1
The total synthesis of acetogenin 1 reported for pyragonicin and its 10-epimer 32 is described. The common THP ring system was stereoselectively constructed through a SMI2-induced reductive cyclization of beta-alkoxy acrylate 5 followed by Mitsunobu inversion, and each chiral center at C-10 was created by Brown's asymmetric allylation. Compound 1 had spectroscopic data consistent with that of natural pyragonicin, but a different optical rotation.