Patent ID: 7119196

Claim:
A compound of formula V, or a salt thereof, wherein: Y and Z are taken together with the two intervening carbon atoms to form a phenyl ring, which is substituted at the C(8) position with at least the substituent —C≡C—R, where R is H, Si(CH 3 ) 3 , t-butyl, isopropyl, methyl, or cyclopropyl; R 1 is one of H, CH 3 , CF 3 , CH 2 CF 3 , CH 2 CH 3 , CH 2 C≡CH, or cyclopropyl; R 2 is a substituted or unsubstituted at least partially unsaturated 5 membered or 6 membered carbocyclic ring or 5 membered or 6 membered heterocyclic ring having at least one heteroatom selected from N, O and S, wherein if substituted the substituent is one or more of F, Cl, Br, or NO 2 at the 2′-position; R 5 is a branched or straight chain C 1 to C 4 halogenated or unhalogenated alkyl or a methyl cyclopropyl.