Previtamin D derivatives

The active forms of vitamin D analogues (1-14) were synthesized by the coupling of the steroid moiety [20] with the corresponding phenyl sulfone derivatives [21] to constitute the side chain part followed by the UV irradiation of the provitamins and the subsequent thermal isomerization of the previtamin D derivatives [22], These active forms of vitamin D analogues were also prepared through the cyclovitamin D derivatives [23]. 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ ]

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