Fatty acids and prostaglandins of thermal cyanobacteria

The compositions of the fatty acids and prostaglandins of extracts from thermophilic cyanobacteria of the taxaOscillatoria andMicrocystidaceae have been investigated. The fatty acids include not only saturated but also polyunsaturated species, including 20:3, 20:4, and 22:4 acids with a known pharmaceutical effect. It has been shown for the first time that the lipid fraction of thermophilic cyanobacteria includes a set of prostaglandins of groups A, E, and F, both in the free form and in the form of esters — MeA₁, AcA₁, AcMeA₁, MeA₂, AcA₂, AcMeA₂, MeA₃, AcA₃, AcMeA₃, 6-ketoE₁, MeE₁, AcE₁, AcMeE₁, MeE₂, AcE₂, AcMeE₂, MeE₃, AcE₃, AcMeE₃, 6-ketoF₁, MeF₁, AcF₁, AcMeF₁, 6-ketoF₂, MeF₂, AcF₂, and AcMeF₂, The latter, together with other previously known compounds, undoubtedly make a contribution to the healing properties of thermal springs.Pacific Ocean Institute of Organic Chemistry, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 869–874, November-December, 1996. Original article submitted August 14, 1995; revision submitted August 12, 1996.