Patent ID: 7700798

Claim:
A method for preparing a compound having the formula: wherein R 21 is an alkyl group, an aryl group, an alkoxy group, a hydroxy group, an amino group, or a halogen atom; wherein R 22 is hydrogen atom, an alkyl group, an aryl group, an alkoxy group, or an amino group; wherein R 23 and R 24 are independently selected from a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, a hydroxy group, an amino group, and a halogen atom or wherein R 23 and R 24 , taken together with the carbon atom to which they are bound, form a ring; wherein R 25 is a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, a hydroxy group, an O-silyl group, or a halogen atom; wherein Z, taken together with the carbons to which it is bonded, forms a six-membered carbon ring; wherein Q 11 is Y or an alkyl group; wherein each of R 26 and R 27 is a hydrogen atom or wherein R 26 and R 27 , taken together, represent a second bond between the carbon atoms to which R 26 and R 27 are bonded; wherein each of R 28 and R 29 is a hydrogen atom or wherein R 28 and R 29 , taken together, represent a second bond between the carbon atoms to which R 28 and R 29 are bonded; and wherein Y is an electron withdrawing group, said method comprising: providing a cyclohexene compound; providing a vinyldiazo compound; and contacting the cyclohexene compound with a vinyldiazo compound in the presence of a dirhodium catalyst under conditions effective to produce a compound having the following Formula XXI: and optionally treating the compound of Formula XXI with a reducing agent under conditions effective to reduce the ring double bond between the carbons to which Z is not bonded, to reduce the double bond between the carbons to which R 25 and Y are bonded, and/or to reduce Y.