cis-2-Vinyl-cyclopropancarbonsaeuremethylester

(3aS,4S,6aR)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-3,3a,4,6a-tetrahydro-furo[3,4-c]pyrazol-6-one

Toluene-4-sulfonic acid (1S,2S,5R)-4-oxo-3-oxa-bicyclo[3.1.0]hex-2-ylmethyl ester

(1R,4S,5S)-4-hydroxymethyl-3-oxabicyclo[3.1.0]hexan-2-one

(1R,4S,5S)-4-Iodomethyl-3-oxa-bicyclo[3.1.0]hexan-2-one