Jp. Dittami et al., PHOTOCYCLIZATION OF ALPHA,BETA-UNSATURATED AMIDE ALDEHYDES - SYNTHESIS OF JATROPHAM, Tetrahedron letters, 36(24), 1995, pp. 4201-4204
alpha,beta-unsaturated amide aldehydes undergo photoisomerization and
intramolecular cyclization to provide hydroxy substituted pyrrolidinon
e systems. A synthesis of the natural product jatropham was accomplish
ed by application of this procedure.