3. Photoinduced transformations. Part 33. Mechanism of photoinduced rearrangement of a (22S,25S)-N-acetylveratr-13(17)-enin-11β-yl nitrite, a fused cyclopentyl nitrite, to a nitrone Hiroshi Suginome,Terutoshi Mizuguchi,Saho Honda,Tadashi Masamune J. Chem. Soc. Perkin Trans. 1 1977 927