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Upstream product

• 1588410-78-9 (8S,20R)-des-A,B-8-benzoyloxy-20-[4'-(tertbutyldimethylsilyloxy)-4'-methyl-pent-(1'E)-en-yl]-pregnane 
• 1588410-77-8 (8S,20R)-des-A,B-8-benzoyloxy-20-[4'-hydroxy-4'-methylpent-(1'E)-en-yl]-pregnane 
• 66774-71-8 Benzoic acid (1R,3aR,4S,7aR)-7a-methyl-1-((S)-1-methyl-2-oxo-ethyl)-octahydro-inden-4-yl ester 
• 1588410-79-0 (20R)-des-A,B-20-[4'-(tert-butyldimethylsilyloxy)-4'-methylpent-(1'E)-en-yl]-pregnan-8-one 
• 1588410-80-3 (20R)-1α-[(tert-butyldimethylsilyl)oxy]-2-methylene-25-[(tert-butyldimethyl-silyl)oxy]-19-nor-22(E)-ene-vitamin D3 tert-butyldimethylsilyl ether 
• 67883-18-5 (3-Hydroxy-3-methylbutyl)triphenylphosphoniumbromid 

Relevant academic research and scientific papers

26-Desmethyl-2-methylene-22-ene-19-nor-1α,25-dihydroxyvitamin D 3 compounds selectively active on intestine

Six new analogs of 2-methylene-19-nor-1α,25-dihydroxyvitamin D 3, 6-7 and 8a,b-9a,b, have been synthesized. All compounds are characterized by a trans double bond located in the side chain between C-22 and C-23. While compounds 6 and 7 possess