New steroid haptens for radioimmunoassay: Synthesis of steroids substituted with thioether or ester linkages at the 2α-position
摘要:
Haptens with bridge at the 2-position have not yet been explored. Radioimmunoassays with antibodies directed against 2-alpha-alkyl bridged steroid haptens are expected to be highly specific due to greater topographical exposure and similarity in conformation to the native steroid. The 2-alpha-alkyl bridged haptens were synthesized by first adding a cyclopropane ring to 2-methylene-4-en-3-one. Selective opening of the three-membered ring with trimethyl silyl iodide and transformation of the iodo group gave a carbocyclic acid, the desired analog for conjugation with protein.
New steroid haptens for radioimmunoassay: Synthesis of steroids substituted with thioether or ester linkages at the 2α-position
作者:Umesh R. Desai、Girish K. Trivedi
DOI:10.1016/0039-128x(91)90080-f
日期:1991.4
Haptens with bridge at the 2-position have not yet been explored. Radioimmunoassays with antibodies directed against 2-alpha-alkyl bridged steroid haptens are expected to be highly specific due to greater topographical exposure and similarity in conformation to the native steroid. The 2-alpha-alkyl bridged haptens were synthesized by first adding a cyclopropane ring to 2-methylene-4-en-3-one. Selective opening of the three-membered ring with trimethyl silyl iodide and transformation of the iodo group gave a carbocyclic acid, the desired analog for conjugation with protein.