Regioselective addition of trimethylstannylcopper–dimethyl sulphide to 1-alkynes: synthesis of ω-substituted 2-(trimethylstannyl)-1-alkenes
作者:Edward Piers、J. Michael Chong
DOI:10.1039/c39830000934
日期:——
Treatment of ω-substituted1-alkynes (2) with 2 equiv. of trimethylstannylcopper–dimethylsulphide (1) in tetrahydrofuran (–63 ° C)in the presence of 60 equiv. of methanol affords good to excellent yields of the corresponding 2-(trimethylstannyl)-1-alkenes (3).
Stereoselective total synthesis of the marine sesterterpenoid (±)-palauolide
作者:Edward Piers、John S.M. Wai
DOI:10.1139/v94-023
日期:1994.1.1
A totalsynthesis of the antimicrobial, structurally unusual sesterterpenoid (±)-palauolide (1) is described. Methylenecyclohexane annulation of 3,6-dimethyl-2-cyclohexen-1-one (4) afforded a mixture of the bicyclic ketones 7 and 9 in a ratio of 94:6. Stereoselective conversion of this mixture into the phosphorodiamidate 46 was achieved via a five-step reaction sequence. Reduction of 46 with Li in