Asr. Anjaneyulu et Cvs. Prakash, LONG-CHAIN GAMMA-LACTONE AND CYCLOPENTANONE DERIVATIVES FROM A SEA PEN OF VIRGULARIA GENUS OF INDIAN COAST, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 33(1), 1994, pp. 55-58
Further examination of the ethyl acetate extract of a sea pen of Virgu
laria genus furnishes three more new long chain cyclopentanone and gam
ma-lactone derivatives (3-5) besides the two new sterols (1 and 2) rep
orted earlier [J Indian chem Soc, 69 (1992) 150]. The structures of th
e new compounds have been established as oxy-4-methyl-2(tetradeca-9Z-e
nyl)-gamma-butanolide (3), methyl-2(tetradeca-3Z,6Z,9Z-trienyl)cyclope
ntanone (4) and -2(tetradeca-3Z,6Z,9Z-trienyl)cyclopent-2-en-1-one (5)
.