Enantiodivergent Synthesis of Both Enantiomers of Marine Alkaloids Haliclorensin and Isohaliclorensin, a Constituent of Halitulin
摘要:
Starting from (3R)-5-benzotriazolyl-3-phenylperhydropyrido[2,1-b][1,3]oxazole 9, the enantiodivergent syntheses of both enantiomers of the marine alkaloids haliclorensin 1 and isohaliclorensin 3 have been achieved. Our syntheses feature ring-expansion reactions for the formation of the aza-macrocycle ring system of 3 and sequential ring-expansion reactions (aza-Claisen rearrangement and Zip reaction) for the formation of the aza-macrocycle ring system of 1.
Synthesis of (−)-(3S)-1-(3-aminopropyl)-3-methylazacyclodecane, the structure proposed for the marine alkaloid haliclorensin
作者:Markus R Heinrich、Wolfgang Steglich
DOI:10.1016/s0040-4039(01)00435-x
日期:2001.5
The total synthesis of both enantiomers of the title compound has been achieved in seven steps with 19% overall yield. The synthetic diamine differs in its NMR data and optical rotation from haliclorensin, a marinealkaloid for which the same structure had been proposed.