“…(29 1) from Axinella ~a n n a b i n a ~~~ has been disclosed. 224 Agelasidine A (292), which was isolated from Agelas nakmzurai,225-226 has been synthesized in three steps from farnesolZ2' and agelasidine C (293) has also been prepared. 228 Two apparently unrelated diterpenes, (294a) and (294b),…”