330189-27-0

Upstream product

• 279684-69-4 (2R,3R,4R)-hex-5-yn-2,3,4-triol 2-benzoate ester 

Downstream Products

• 330189-37-2 Benzoic acid (1R,2R,3R)-3-[(2S,3R,4S,5R,6R)-4,5-bis-(tert-butyl-diphenyl-silanyloxy)-3-iodo-6-methyl-tetrahydro-pyran-2-yloxy]-2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-pent-4-ynyl ester 
• 330189-36-1 Benzoic acid (1R,2R,3R)-3-[(2S,3R,4S,5R,6R)-4,5-bis-(tert-butyl-diphenyl-silanyloxy)-3-iodo-6-methyl-tetrahydro-pyran-2-yloxy]-2-(tert-butyl-diphenyl-silanyloxy)-1-methyl-pent-4-ynyl ester 
• 330189-32-7 (2R,3R,4R)-4-[(2S,3R,4S,5R,6R)-4,5-Bis-(tert-butyl-diphenyl-silanyloxy)-3-iodo-6-methyl-tetrahydro-pyran-2-yloxy]-3-(tert-butyl-dimethyl-silanyloxy)-hex-5-yn-2-ol 
• 330189-31-6 (2R,3R,4R)-4-[(2S,3R,4S,5R,6R)-4,5-Bis-(tert-butyl-diphenyl-silanyloxy)-3-iodo-6-methyl-tetrahydro-pyran-2-yloxy]-3-(tert-butyl-diphenyl-silanyloxy)-hex-5-yn-2-ol 

Relevant academic research and scientific papers

Discovery of the tungsten carbonyl-catalyzed endo-selective alkynyl alcohol cycloisomerization reaction: Applications to stereoselective syntheses of D-olivose, D-olivose disaccharide substructures of landomycin and mithramycin

An account of the discovery of the tungsten carbonyl-catalyzed endo-selective cycloisomerization of alkynyl alcohols to dihydropyrans is described. The utility of this new chemical transformation involving tungsten vinylidene catalytic intermediates is de