Podocarpicacid has been unambiguously converted to nimbiol and nimbiol methyl ether thus confirming the complete structures assigned to these substances. In the course of this work, a group of C-7 methyl derivatives of podocarpicacid has been prepared. The physical constants of these methyl derivatives are compared with the constants of the parent substances.
Reactions of η2-(2-acylaryl-C,O)tetracarbonylmanganese(I) complexes with some vinyl sulfur compounds
作者:Richard C. Cambie、Peter S. Rutledge、David R. Welch、Paul D. Woodgate
DOI:10.1016/0022-328x(94)80011-1
日期:1994.3
The thermally promoted reactions of some phenyl and diterpenoid eta2-(2-acylaryl-C,O)tetracarbonylmanganese(I) complexes with phenyl vinyl sulfone, methyl vinyl sulfone, or phenyl vinyl sulfoxide, have been investigated. The major products from the diterpenoid complexes arise from insertion followed by reductive demetallation; cyclopenta-annulation, when it occurs, is a minor process. Liberation of the metal-free adducts from their Mn-containing precursors requires treatment with either acid or photolysis-oxidation.