General synthesis of highly functionalized cyclopentane segments for the preparation of jatrophane diterpenes.
Short and efficient syntheses of two diastereomeric cyclopentane segments present in most jatrophane diterpenes were achieved. Key steps are a stereoselective C-2 elongation, an RCM, and a hydroboration reaction. An orthogonal protecting group methodology makes these segments useful building blocks for diterpene synthesis.
Institute of Organic Chemistry, University of Vienna, Wahringerstrasse 38, A-1090 Vienna, Austria.
Christoph
C
Lentsch
Uwe
U
Rinner
D003517:Cyclopentanes / Q000138:chemical synthesis* / Q000737:chemistry*; D004224:Diterpenes / Q000138:chemical synthesis* / Q000737:chemistry; D008968:Molecular Conformation; D013237:Stereoisomerism
D003517:Cyclopentanes; D004224:Diterpenes; C530345:jatrophane