Novel synthesis of 2-Substituted 19-norvitamin D A-ring phosphine oxide from d-glucose as a building block

19-Norvitamin D A-ring phosphine oxide 5 was synthesized by a new sequence mode starting from d-glucose as a chiral template. Transformation of the pyranoside ring into the A-ring carbocycle was achieved by the Pd-catalyzed Ferrier rearrangement. The phosphine oxide 5 was obtained in an 18% overall...

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Veröffentlicht in:Bioorganic & medicinal chemistry letters 2003-03, Vol.13 (5), p.809-812
Hauptverfasser: Shimizu, Masato, Iwasaki, Yukiko, Shibamoto, Yoshinori, Sato, Miki, DeLuca, H.F, Yamada, Sachiko
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Sprache:eng
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Zusammenfassung:19-Norvitamin D A-ring phosphine oxide 5 was synthesized by a new sequence mode starting from d-glucose as a chiral template. Transformation of the pyranoside ring into the A-ring carbocycle was achieved by the Pd-catalyzed Ferrier rearrangement. The phosphine oxide 5 was obtained in an 18% overall yield by this novel cost-effective method. 19-Norvitamin D A-ring phosphine oxide was synthesized by a new sequence mode starting from d-glucose as a chiral template.
ISSN:0960-894X
1464-3405
DOI:10.1016/S0960-894X(03)00005-2