Patent ID: 8835654

Claim:
A compound of formula XII wherein: R h is hydrogen, benzyl, aryl-alkyl, aryl, or alkyl; R i is hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted benzyl, alkenyl, carbocyclic, heterocyclic, or together with R j , R k or R m may be linked to form a ring structure; R j , R k , R m , R n , and R o are each independently hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted benzyl, alkyl, alkenyl, carbocyclic, heterocyclic, absent or together may be linked to form a ring structure; X + is hydrogen, a cationic group, or an ester-forming group; t 1 and t 2 are each single or double bonds, provided that both t 1 and t 2 are not both double bonds; provided that at least one of (i), (ii), or (iii) applies: (i) R h is an aryl-alkyl or aryl group represented by a thiophenyl-alkyl, benzothiophenyl-alkyl, thiophenyl, or benzothiophenyl group; (ii) at least one of R j , R k , R m , R n and R o is an alkyl group substituted with a thiophenyl or benzothiophenyl group; or (iii) at least one of R j , R k , R m , R n , or R o is an aryl group represented by thiophenyl or benzothiophenyl group; or a pharmaceutically acceptable salt, ester or prodrug thereof.