Didemnum chartaceum lamellarin sulfates from

Lamellarin T-V and Y sulfates (67-70) were isolated from an unidentified ascidian from the Arabian Sea coast of India [97]. Four additional lamellarin sulfates, the 20-sulfates of lamellarins B, C and L and lamellarin G 8-sulfate (71-74) were isolated from Didemnum chartaceum from the Great Barrier Reef [98]. Unusually long relaxation times were observed for certain signals in the H NMR spectra of these compounds. Lamellarin a 20-sulfate (75) was isolated from an unidentified ascidian from India and was an inhibitor of human immunodeficiency virus type 1 (HIV-1) integrase [99]. 

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