The first total synthesis or (-)-aplyolide A(+). (16S)-methyloxacyclohexadeca-(5Z, 8Z, 11Z, 14Z)-tetraen-2-one, 1 is reported. The synthesis is based on three consecutive couplings of terminal alkynes with propargylic halides and proves the absolute configuration of the stereogenic center of the natural product. (C) 2001 Elsevier Science Ltd. All rights reserved.
The first total synthesis or (-)-aplyolide A(+). (16S)-methyloxacyclohexadeca-(5Z, 8Z, 11Z, 14Z)-tetraen-2-one, 1 is reported. The synthesis is based on three consecutive couplings of terminal alkynes with propargylic halides and proves the absolute configuration of the stereogenic center of the natural product. (C) 2001 Elsevier Science Ltd. All rights reserved.
Total Synthesis of 17-isoLevuglandin E<sub>4</sub> and the Structure of C22-PGF<sub>4α</sub>
作者:Wei Sha、Robert G. Salomon
DOI:10.1021/jo000537v
日期:2000.8.1
docosahexaenoic acid. A total synthesis was executed to facilitate detection and identification of 17-isoLGE4 in biological samples. Conjugateaddition of a higher order vinyl cyanocuprate to a gamma-alkoxy enone achieved the final carbon-carbon bond formation to complete a convergent elaboration of the 17-isoLGE4 carbon skeleton. Attempted construction of the requisite vinyl nucleophile synthon using hydrostannylation