Total synthesis of natural (−)- and unnatural (+)-Melearoride A
作者:Carson W. Reed、Mark G. Fulton、Kellie D. Nance、Craig W. Lindsley
DOI:10.1016/j.tetlet.2019.02.006
日期:2019.3
This communication details the first total synthesis of the 13-membered macrolide, (−)-Melearoride A, as well as unnatural (+)-Melearoride A. The synthesis features a concise 13 step synthesis (11 steps longest linear sequence) that offers flexible stereo-control and multiple opportunities for unnatural analog synthesis to delve into antifungal SAR. The route features a cuprate addition, an Evans asymmetric
Optically pure (+)-calvine, (+)-2-epicalvine, (2S,6S)-(6-pentylpiperidin-2-yl)acetic acid methyl ester and (2R,6S)-(6-pentylpiperidin-2-yl)acetic acid methyl ester, four piperidine alkaloids isolated from ladybird beetles of the genus Calvia (Coccinellidae), were synthesised from a common precursor using cyclisative Pd(II)/Cu(II)-catalysed carboamination-(methoxy)carbonylation tandem reaction of alkenylamines
Enantiodivergent synthesis of both enantiomers of sulcatol, an aggregation pheromone of Gnathotrichus sulcatus, and matsutake alcohol, a flavor compound of the mushroom Tricholoma matsutake, has been established using (R)-epichlorohydrin as common chiral precursor.
An enantiospecific route to (6R)-(-)-massoialactone and (4R,6R)-(+)-4-hydroxy-6-pentylvalerolactone
作者:Seiichi Takano、Masaki Setoh、Kunio Ogasawara
DOI:10.1016/s0957-4166(00)80259-1
日期:1992.4
An enantiospecific route to two delta-lactone natural products, (6R)-(-)-massoialactone and (4R,6R)-(+)-4-hydroxy-6-pentylvalerolactone, has been developed by using (R)-epichlorohydrin as a chiral starting material.
Schwarz, Sigfrid; Truckenbrodt, Georg; Schick, Hans, Zeitschrift fur Chemie, 1982, vol. 22, # 5, p. 187 - 188
作者:Schwarz, Sigfrid、Truckenbrodt, Georg、Schick, Hans、Depner, Johannes