C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
204/91.05, 260/6
C07C 172/00 (1980.01)
Patent
CA 1159850
ABSTRACT A process for the preparation of 24,24-difluoro-25- hydroxy-previtamin D3 of the formula: Image which comprises irradiating a compound of the formula: Image and isolating the desired compound from the reaction mixture. The previtamin D3 is useful in the preparation of 24,24-di- fluoro-25-hydroxy-vitamin D3.
419374
Deluca Hector F.
Ikekawa Nobuo
Kobayashi Yoshiro
Tanaka Yoko
Osler Hoskin & Harcourt Llp
Wisconsin Alumni Research Foundation
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