[Isolation and identification of a new long-chain tetrahydroxyamide]

A novel long chain tetrahydroxyamide compound (C42H85NO5, mp 178-180 degrees C) has been isolated from Polymastia sobustia collected from the South China Sea. On the basic of the spectral data of IR, MS, 1H NMR, 13C NMR, DEPT and chemical way, the compound was identified as N-(1-hydroxymethyl-2,6-dihydroxyl) heptadecyl-5-hydroxyltetracosanamide, sobustiamide.