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'Upenamide: An unprecedented macrocyclic alkaloid from the Indonesian sponge Echinochalina sp
J I Jiménez1, G Goetz, C M Mau
1Department of Chemistry, University of Hawai'i at Manoa, Honolulu, Hawaii 96822-2275, USA.
The Journal of Organic Chemistry
|December 12, 2000
Abstract:
'Upenamide (1) represents a new class of macrocyclic marine alkaloid possessing both spirooxaquinolizidinone and hemiaminal ring systems. It was isolated from the Indonesian sponge Echinochalina sp. The gross structure of 1 was elucidated by spectroscopic methods and accurate mass measurements. A suggestion is made as to its biogenetic origin.