Ental Section. As well as compounds 1?, six recognized secondary metabolites including
Ental Section. In addition to compounds 1?, six recognized secondary metabolites such as N-methylphenyldehydroalanyl-L-prolin-anhydrid (5) , cyclo-trans-4-OH-(D)-Pro-(D)-Phe (six) , cyclo(D)-Pro-(D)-Val (7) , rubralide C (8) , 5-epialtenuene (9) and altenuene…