Constituintes químicos da ascídia didemnum psammatodes (sluiter, 1895) coletada na costa cearense Chemical constituent from the ascidian didemnum psammatodes (sluiter, 1895) collecter on the shores of ceara state

Abstract

Chemical investigation of the methanolic extract of the ascidian Didemnum psammatodes has led to the identification of the nucleosides 2'-deoxyuridine (1), thymidine (2), 2'-deoxyinosine (3) and 2'-deoxyguanosine (4), the steroids cholestanol, cholestanone and stigmasterol in mixture and batyl alcohol plus two analogs, 1-heptadecyloxy-2,3-propanediol and 1-nonadecyloxy-2,3-propanediol in mixture. Their structures were proposed by NMR, MS and comparison with literature data and GC-MS analysis.

Keywords

• chemical contituents
• Didemnum psammatodes
• tunicate