HETEROCYCLES
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Communication | Regular issue | Vol 4, No. 3, 1976, pp.467-470
Published online, 1st January, 1970■ Photoisomerisation of trans-4b,10b,11,12-Tetrahydrobenzo[c]phenanthridin-6(5H)-one to the cis-Isomer
Published online, 1st January, 1970
DOI: 10.3987/R-1976-03-0467
■ Photoisomerisation of trans-4b,10b,11,12-Tetrahydrobenzo[c]phenanthridin-6(5H)-one to the cis-Isomer
Ichiya Ninomiya,* Toshiko Kiguchi, Okiko Yamamoto, and Takeaki Naito
*Kobe Women’s College of Pharmacy, Motoyamakita, Higashinad, Kobe, Hyogo658, Japan
Abstract
Irradiation of some B/C-trans-benzo[c]phenanthridones substituted with an electron-withdrawing group such as ester and nitrile caused isomerisation to afford the corresponding cis-lactams.
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