81987-65-7

Upstream product

• 81987-62-4 methyl α,5-dimethyl-4-hydroxy-5-<1-<(tetrahydro-2H-pyran-2-yl)oxy>ethyl>cyclopentane-1-ethanol monotosylate 
• 82041-93-8 methyl α,5-dimethyl-4-hydroxy-5-<1-<(tetrahydro-2H-pyran-2-yl)oxy>ethyl>-2-cyclopentene-1-acetate 
• 82042-00-0 2-(2-cyano-1-methylethyl)-1-methyl-5-(phenylmethoxy)-α,1-dimethylcyclopentane-1-methanol tetrahydro-2H-pyran-2-yl ether 
• 81987-64-6 (S)-3-{(1S,2R,3S)-3-Benzyloxy-2-methyl-2-[(S)-1-(tetrahydro-pyran-2-yloxy)-ethyl]-cyclopentyl}-butan-1-ol 
• 81987-63-5 (S)-3-{(1S,2R,3S)-3-Benzyloxy-2-methyl-2-[(S)-1-(tetrahydro-pyran-2-yloxy)-ethyl]-cyclopentyl}-butyraldehyde 
• 81987-61-3 (S)-2-{(1R,4R,5R)-4-Hydroxy-5-methyl-5-[(R)-1-(tetrahydro-pyran-2-yloxy)-ethyl]-cyclopent-2-enyl}-propionic acid 
• 64798-72-7 (S)-2-{(1R,2R,3R)-3-Hydroxy-2-methyl-2-[(R)-1-(tetrahydro-pyran-2-yloxy)-ethyl]-cyclopentyl}-propionic acid methyl ester 
• 82041-99-4 (R)-3-{(1R,2R,3R)-3-Hydroxy-2-methyl-2-[(R)-1-(tetrahydro-pyran-2-yloxy)-ethyl]-cyclopentyl}-butyronitrile 
• 82041-98-3 methyl α,5-dimethyl-4-hydroxy-5-<1-<(tetrahydro-2H-pyran-2-yl)oxy>ethyl>cyclopentane-1-ethanol 
• 82042-01-1 <1α(S<*>),2β(S<*>),5β>-1-<2-(3-hydroxy-1-methylpropyl)-1-methyl-5-(phenylmethoxy)cyclopentyl>ethanol 
• 98-59-9 p-toluenesulfonyl chloride 

Downstream Products

• 64798-77-2 <1α,2β(R<*>)5β>-1-<2-(3-iodo-1-methylpropyl)-1-methyl-5-(phenylmethoxy)cyclopentyl>ethanone 
• 64798-78-3 (3α,3aα,8α,8aα)-octahydro-3a,8-dimethyl-3-(phenylmethoxy)-4(1H)-azulenone 
• 82042-02-2 (3α,3aα,8α,8aα)-octahydro-3a,8-dimethyl-5-(3-methyl-2-butenyl)-3-(phenylmethoxy)-4(1H)-azulenone 
• 82042-03-3 (3α,3aα,8α,8aα)-octahydro-3a,8-dimethyl-5-(3-methyl-2-butenyl)-3-(phenylmethoxy)-4(1H)-azulenone 
• 81987-66-8 Toluene-4-sulfonic acid (S)-3-((1S,2S,3S)-2-acetyl-3-benzyloxy-2-methyl-cyclopentyl)-butyl ester 

Relevant academic research and scientific papers

Pseudoguaianolides. 1. Stereospecific Total Synthesis of the Ambrosanolides dl-Ambrosin and dl-Damsin

Regio- and stereospecific total syntheses of the sesquiterpene lactones dl-ambrosin (1) and dl-damsin (2) are described.Both syntheses start with bromo ketal ester 8 and proceed via the intermediacy of cyclopentenol 4, the precursor to perhydroazulenone 2