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- W2339571330 abstract "Abstract The n→π * photochemistry of saturated diterpenoid ketones of the gibberellin C type 1 has been investigated. A Norrish type 1 cleavage leading to Δ 7(11) -unsaturated 7,8-seco-8-aldehydes 5 and 6 , respectively, takes place as the main process. These secoaldehydes upon prolonged irradiation undergo intramolecular “crossed” photocycloaddition to the highly strained oxetanes 7 and 8 . The oxetane methylester 8 represents a suitable key compound for proton catalyzed ring opening reactions under nucleophilic attack at C-8. In such a manner a series of 8α,11α-bifunctionalized gibbanes 12–20 have been prepared in good yields and under mild conditions." @default.
- W2339571330 created "2016-06-24" @default.
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- W2339571330 date "1979-01-01" @default.
- W2339571330 modified "2023-09-30" @default.
- W2339571330 title "Photochemische reaktionen—XXXII" @default.
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- W2339571330 doi "https://doi.org/10.1016/0040-4020(79)80156-8" @default.
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