Photochemische Studien, 61. Photoisomerisierung von Digitoxin in kristallinem Zustand

Abstract
Photochemical Studies 61. – Photoisomerization of Digitoxin in Crystalline StateUV irradiation of digitoxin (1) in the crystalline state yields as major photoisomerization product 3β‐[O‐β‐D‐digitoxopyranosyl‐(1→4)‐O‐β‐D‐digitoxopyranosyl‐(1→4)‐O‐β‐D‐digitoxopyranosyloxy]‐14,20ξ‐epoxy‐5β‐cardanolide (2).