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pro vyhledávání: '"Asako Toyoda"'
Autor:
Kazuo Nagasawa, Hazuki Nagai, Asako Toyoda, Tomonari Yamada, Toshio Tsuchida, Junko Abe, Yusuke Moriguchi
Publikováno v:
Tetrahedron. 65:10002-10008
19-Norvitamin D analogs 3a and 3b were synthesized from 25-hydroxyvitamin D, obtained via a bioconversion method. The synthetic route features a highly regio- and stereoselective hydroboration reaction to afford 25-hydroxy-3,5-cyclopropyl-vitamin D d