Phytochemistry p. 1609 - 1614 (1990)
Update date:2022-08-03
Topics:
Khan, Mamunur R.
Gray, Alexander I.
Reed, David R.
Sadler, Ian H.
Waterman, Peter G.
Four novel diterpenes have been isolated from the stem bark of Zuelania guidonia.These compounds are based on two novel derivations of the clerodane nucleus, the zuelanin skeleton <(rel)-18β,19α-diacetoxy-10β,17β,19β,20α-clerod-3,12,14-trien-18,19-oxide> and the isozuelanin skeleton <(rel)-18β,19α-diacetoxy-10β,17β,19β,20α-clerod-3,12,14-trien-18,19-oxide>.On the basis of spectroscopic studies and some chemical modifications the four new compounds have been identified as 2α-hydroxyzuelanin-6β-cinnamate, 6β-hydroxyzuelanin-2α-cinnamate, 2β-hydroxyzuelanin-6β-cinnamate and 2β-acetoxyisozuelanin-6β-cinnamate.
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