Polystanins A–D, Four New Protolimonoids from the Fruits of <i>Aphanamixis polystachya</i>
作者:Yao Zhang、Jun-Song Wang、Xiao-Bing Wang、Yu-Cheng Gu、Ling-Yi Kong
DOI:10.1248/cpb.c12-00332
日期:——
Two new apo-tirucallane triterpenoids with six-membered hemiketal, polystanins A (1) and B (2), and two new tirucallane triterpenoids, polystanins C (3) and D (4) were isolated from the fruits of Aphanamixis polystachya. They were elucidated on the basis of detailed spectroscopic analysis including IR, high resolution-electrospray ionization (HR-ESI)-MS, 1 dimensional (1D)- and 2D-NMR. Their absolute