Prostaglandin (15S)-PGA2 derivatives in the gorgonian Plexaura homomalla (Esper), forma kükenthali Moser
- 1) Chemistry Department, The University of Oklahoma, 73019, Norman, Oklahoma, USA
- 2) The Upjohn Company, 49001, Kalamazoo, Michigan, USA
The lipid fraction, 17%, of air-driedPlexaura homomalla formakükenthali, collected in the Caribbean at Puerto Rico, yielded 50% of its weight as the mammalian prostaglandin (15S)-PGA2 methyl ester. The freeze-dried gorgonian yielded (15S)-PGA2 largely as the acetate of the methyl ester. (15S)-PGA2 was also obtained from material collected at St. Croix and at South Caicos. Field observations indicate thatPlexaura kükenthali may be a species separate fromPlexaura homomalla and that it is abundant on some shallow water reefs in the Caribbean. Prostaglandins could not be detected in the lipid fraction of eggs isolated fromPlexaura homomalla (Esper) formahomomalla.
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