Journal of the Chemical Society. Perkin transactions I p. 2666 - 2669 (1981)
Update date:2022-08-05
Topics:
Burke, Basil A.
Chan, Wilfred R.
Pascoe, Keith O.
Blount, John F.
Manchand, Percy S.
A novel casbane diterpene, crotonitenone <(E)-(1R*,5S*,7R*,11S*,14S*)-5-hydroxy-3,7,11,15,15-pentamethylbicyclo<12.1.0>pentadec-2-ene-4,8-dione> (7), C20H32O3, has been isolated from Croton nitens (Euphorbiaceae) and its structure and relative stereochemistry have been established by chemical, spectral, and X-ray crystallographic means.Crystals of (7) are monoclinic, space group P21, with a = 12.446(1), b = 13.285(1), c = 5.872(1) Angstroem, β = 97.02(1) grad, and Z = 2.The structure was refined by least squares to R 0.040 and R' 0.038.
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