Determination of absolute configuration of stereogenic carbinol centers in annonaceous acetogenins by proton and fluorine 19-NMR analysis of Mosher ester derivatives
作者:Matthew J. Rieser、Yu Hua Hui、J. Kent Rupprecht、John F. Kozlowski、Karl V. Wood、Jerry L. McLaughlin、Paul R. Hanson、Zhiping Zhuang、Thomas R. Hoye
DOI:10.1021/ja00052a018
日期:1992.12
The absolute configuration of the stereogenic carbinol centers in nine annonaceous acetogenins has been determined by careful 1 H- and 19 F-NMR analysis of (S)- and (R)-Mosher ester [methoxy(trifluoromethyl)phenylacetate or MTPA] derivatives. These acetogenins include five adjacent bis-tetrahydrofuran acetogenins [uvaricin (3), bullatacin (4), bullatacinone (5), asimicin (6), and rolliniastatin 1 (7)]
通过对 (S)- 和 (R)-Mosher 酯 [甲氧基(三氟甲基)苯基乙酸酯或 MTPA] 衍生物进行仔细的 1 H-和 19 F-NMR 分析,确定了九个番荔枝苷元中立体生成甲醇中心的绝对构型。这些 acetogenins 包括五个相邻的双四氢呋喃 acetogenins [uvaricin (3)、bulatacin (4)、bulatacinone (5)、asimicin (6) 和 rolliniastatin 1 (7)] 和四个单四氢呋喃 acetogenins [reticulatacin (8)、isoannonacin -10-一 (9)、番红花素-10-一 (10) 和番红花素 (11)]