Asymmetric total synthesis of antileukemic sesquiterpene (+)-ivalin
作者:Kiyoshi Tomioka、Fumio Masumi、Toyoharu Yamashita、Kenji Koga
DOI:10.1016/s0040-4039(00)99876-9
日期:1984.1
Ivalin, a New Sesquiterpene Lactone<sup>1</sup>
作者:WERNER HERZ、GREGOR HÖGENAUER
DOI:10.1021/jo01050a052
日期:1962.3
Stereoselective reactions. 15.1 total synthesis of (+)-ivalin by utilizing asymmetric double alkylation reaction of α,β-unsaturated aldimine
作者:Kiyoshi Tomioka、Fumio Masumi、Toyoharu Yamashita、Kenji Koga
DOI:10.1016/0040-4020(89)80093-6
日期:1989.1
synthesis of (+)-ivalin (4), a representative of antileukemic eudesmane sesquiterpenes, is described. The ene-aldehyde (6) was converted to the nearly optically pure alcohol (20) through the asymmetric double a1ky1ation reaction of the chiral ene-enamine (14). The ene-carbonyl cyclization of (25) with tin(IV) chloride afforded the core skeleton (26). The stereoinversion of hydroxyl group and further transformation
2D 1H and 13C NMR evidence for stereoselective formation of a new bond C–N, C–S or C–C in the reaction of ivalin acetate with substituted pyrimidines
作者:E. Diaz、J.L. Nava、H. Barrios、B. Quiroz、A. Guzman、L. León G、A. Fuentes B
DOI:10.1016/s1386-1425(97)00245-x
日期:1998.4
Several pyrimidine derivatives of ivalin acetate were synthesized as potential anti HIV agents. High stereoselective Michael addition to ivaline acetate was observed and a new C-C, C-N or C-S bond was formed. 2D NMR 1H and 13C as well as X-ray crystallographic studies were performed on the compounds herein described to establish the structure and stereochemistry.