The R absolute configuration at C-2' of the glyceryl moiety of the natural diterpenoid 1,3-glyceryl esters 1 and 2 has been established by applying the modified Mosher method. These esters have been isolated, together with the corresponding 1,2-derivatives (3 and 4), from different collections of the Antarctic dorid nudibranch Austrodoris kerguelenensis. Surprisingly, such a configuration is opposite to that of all marine terpenoid diacylglycerols so far reported. Compounds 1 and 3 are new natural products closely related to austrodorin 5, already described from the same species. (C) 1999 Elsevier Science Ltd. All rights reserved.
Absolute configuration of diterpenoid diacylglycerols from the Antarctic nudibranch Austrodoris kerguelenensis
Cimino G;
1999
Abstract
The R absolute configuration at C-2' of the glyceryl moiety of the natural diterpenoid 1,3-glyceryl esters 1 and 2 has been established by applying the modified Mosher method. These esters have been isolated, together with the corresponding 1,2-derivatives (3 and 4), from different collections of the Antarctic dorid nudibranch Austrodoris kerguelenensis. Surprisingly, such a configuration is opposite to that of all marine terpenoid diacylglycerols so far reported. Compounds 1 and 3 are new natural products closely related to austrodorin 5, already described from the same species. (C) 1999 Elsevier Science Ltd. All rights reserved.File in questo prodotto:
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