The diester derivative 7 of the title ring system prepared by cycloaddition of the steroidal enamine 5 and tetrasone carboxylic acid ester was subjected to hydrolysis and subsequent thermolysis to give the unsubstituted title compound 8. Comparison of its UV and CD spectra are discussed and experimental evidence for an optically forbidden n→π* transition (A2 state) are provided.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry