Patent ID: 7214831

Claim:
A compound having the formula (I): wherein A is a cyclic moiety selected from the group consisting of aryl; the cyclic moiety being optionally substituted with alkyl, alkenyl, alkynyl, alkoxy, hydroxyl, hydroxylalkyl, halo, haloalkyl, amino, thio, alkylthio, arylthio, aralkylthio, acylthio, alkylcarbonyloxy, alkyloxycarbonyl, alkylcarbonyl, alkylsulfonylamino, aminosulfonyl, or alkylsulfonyl; each of Y 1 and Y 2 , independently, is a bond; L is a straight C 3-12 hydrocarbon chain containing at least one double bond, at least one triple bond, or at least one double bond and one triple bond; the hydrocarbon chain being optionally substituted with C 1-4 alkyl, C 2-4 alkenyl, C 2-4 alkynyl, halo, amino, thio, alkylthio, arylthio, aralkylthio, acylthio, nitro, cyano, C 3-5 cycloalkyl, 3–5 membered heterocycloalkyl, monocyclic aryl, 5–6 membered heteroaryl, C 1-4 alkylcarbonyloxy, C 1-4 alkyloxycarbonyl, C 1-4 alkylcarbonyl, or formyl; and further being optionally interrupted by —O—, —N(R e )—, —N(R e )—C(O)—O—, —O—C(O)—N(R e )—, —N(R e )—C(O)—N(R f )—, or —O—C(O)—O—; each of R e and R f , independently, being hydrogen, alkyl, alkenyl, alkynyl, alkoxy, hydroxylalkyl, hydroxyl, or haloalkyl; X 1 is O or S; and X 2 is —OR 1 , —SR 1 , or —SeR 1 , wherein R 1 is hydrogen, alkyl, acyl, unsubstituted phenyl or aralkyl; or a salt thereof.