Chnemical constituents from Bombyx Batryticatus

Objective To study the chemical constituents of Bombyx batryticatus. Methods The chemical constituents of B. batryticatus were isolated by different column chromatographic techniques, including silica gel and Sephadex LH-20 columns. The structures of these compounds were identified by a comprehensive analysis of the spectroscopic data. Results Eleven compounds were isolated from the Et OAc extract of B. batryticatus. The compounds were identified as cyclo(D)-Pro-(D)-Val(1), cyclo(S)-Pro-(R)-Leu(2), cyclo(D)-Pro-(D)-Ile(3), cyclo(D)-Pro-(D)-Phe(4), aurantiamid(5),(+)-pinoresinol(6), isololiolide(7), butyl-2-pyrrolidone-5-carboxylate(8),(-)-medioresinol(9),(-)-lariciresinol(10), and methylphydroxybenzeneacetate(11). Conclusion All the compounds are isolated from B. batryticatus for the first time.