G. Davilahuerta et al., CADINANE-TYPE SESQUITERPENES INDUCED IN GOSSYPIUM COTYLEDONS BY BACTERIAL INOCULATION, Phytochemistry, 39(3), 1995, pp. 531-536
Two new sesquiterpenes, the cis- and trans-diastereomers of 7-hydroxyc
alamenen-2-one, as well as trans-7-hydroxycalamenene, have been identi
fied in extracts from cotyledons of bacterial blight-resistant Gossypi
um hirsutum harvested during the period of sesquiterpenoid phytoalexin
biosynthesis following inoculation with the bacterial pathogen Xantho
monas campestris pv. malvacearum. The cis- and trans-diastereomers wer
e distinguished by NOE correlations predicted from molecular modelling
calculations.