Triplettsensibilisierte Photoisomerisierung von Provitamin D3
✍ Scribed by Sabine Gliesing; Hans-Dieter Ilge; Manfred Reichenbächer; Dieter Faßler
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2010
- Weight
- 263 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0044-2402
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We report on the conversion of cholesterol to A=\*7 -cholestadien-la,3g-diol diacetate (6) the photoprecursor of the physiologically active la-hydroxyvitamin D3,1 via A6-cholesten-la.Sg-diol @a). The latter compound was synthesized by modification of a recently published procedure of Li/liquid NH3 r
## Abstract Viene descritta la sintesi di una nuova provitamina D, il Δ^5,7^‐Norcolestadien‐3 β‐ol, a partire da una sterina con catena laterale rettilinea e satura. È stato pure isolato e caratterizzato un isomero della nuova provitamina, il Δ^4,6^‐Norcolestadien‐3 β‐olo presente nelle acque madri