Almazole C, a new indole alkaloid bearing an unusually 2,5-disubstituted oxazole moiety, and its putative biogenetic peptidic precursors, from a Senegalese delesseriacean seaweed

Article abstract of DOI:10.1002/hlca.19940770726

From product isolation and biomimetic synthesis - which also establishes absolute configurations - the known oxazole alkaloids almazoles A ((+)-1) and B ((+)-2) seem to arise in a Senegalese delesseriacean seaweed from, in sequence, the new modified pepti