96685-52-8Relevant articles and documents
Vitamin D3 synthetic studies. Intramolecular Diels-Alder approaches to the CD-ring fragment
Clasby, Martin C.,Craig, Donald,Jaxa-Chamiec, Albert A.,Lai, Justine Y. Q.,Marsh, Andrew,Slawin, Alexandra M. Z.,White, Andrew J. P.,Williams, David J.
, p. 4769 - 4802 (2007/10/03)
The enantiospecific synthesis of the vitamin D3 CD ring fragment 3 is reported. Key steps are the diastereoselective allylation of a norephedrine/dihydrocitronellic acid-derived oxazolidinone, and the intramolecular Diels-Alder reaction of a sulfonyl-substituted dienyne. The analogous cycloaddition reaction of a trienylsulfone substrate is shown to give products having the incorrect stereochemistry for vitamin D3 synthesis.
Vitamin-D3-Synthesestudien: enantiospezifische Synthese des CD-Ring-Fragmentes von Vitamin D3
Clasby, Martin C.,Craig, Donald,Marsh, Andrew
, p. 1495 - 1497 (2007/10/02)
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A GENERAL METHOD FOR THE STEREOSELECTIVE CONSTRUCTION OF DES-AB-CHOLESTANES. A FIRST TOTAL SYNTHESIS OF (+)-8α-PHENYLSULFONYL-DES-AB-CHOLESTANE
Nemoto, Hideo,Kurobe, Hiroshi,Fukomoto, Keiichiro,Kametani, Tetsuji
, p. 259 - 262 (2007/10/02)
(+)-8α-Phenylsulfonyl-des-AB-cholestane, a potential intermediate of vitamin D3, was stereoselectively synthesized from (-)-indanone derivative possessing the required chiralities, at the C13, C14, C17, and C20