TY - JOUR A1 - Jefferies, PR A1 - Knox, JR A1 - Scaf, B T1 - Structure elucidation of some ent-clerodane diterpenes from Dodonaea boroniaefolia and Cyanostegia augustifolia JF - Australian Journal of Chemistry JO - Aust. J. Chem. Y1 - 1973 VL - 26 IS - 10 SP - 2199 EP - 2211 KW - UR - https://doi.org/10.1071/CH9732199 N2 - Two diterpene alcohols (1) and (2) and a hydroxy acid isolated as the ester (7) have been obtained from D. boroniaefolia. Their structures have been established by correlation with the acid (10) by way of the cyclopropane intermediate (17) and its product of ring opening (22). The diacid (24) from Cyanostegia angustifolia has also been correlated with (22) through the diol (29) and keto acid (31). ER -