76530-42-2

Upstream product

• 70905-65-6 1(R),4(S),5(R)-4-ethynyl-4-hydroxy-3,3,5-trimethyl-cyclohexyl acetate 
• 108-24-7 acetic anhydride 
• 118829-40-6 (R)-4-ethynyl-3,5,5-trimethylcyclohex-3-en-1-ol 
• 152187-06-9 (R)-5-(tert-butyldimethylsilyloxy)-2-[(trifluoromethanesulfonyl)oxy]-1,3,3-trimethylcyclohex-1-ene 
• 130583-95-8 (4R,6R)-4-[(tert-butyldimethylsilyl)oxy]-2,2,6-trimethylcyclohexan-1-one 
• 152125-31-0 (4R,6R)-2,2,6-Trimethyl-4-trimethylsilanyloxy-cyclohexanone 
• 83646-59-7 1(S),4(R),6(R)-1-ethynyl-2,2,6-trimethyl-1,4-cyclohexanediol 
• 20548-02-1 (4R,6R)-4-hydroxy-2,2,6-trimethylcyclohexan-1-one 
• 64839-18-5 (1R,5R)-3,3,5-trimethyl-4-oxocyclohexyl acetate 

Downstream Products

• 118829-40-6 (R)-4-ethynyl-3,5,5-trimethylcyclohex-3-en-1-ol 
• 322474-86-2 1,1-dimethylethyl{[(1R)-4-ethynyl-3,5,5-trimethylcyclohex-3-entl]oxy}dimethylsilane 
• 224631-90-7 4-[(4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enyl]but-3-yn-2-one 
• 322474-88-4 4-[(4R)-4-acetyloxy-2,6,6-trimethylcyclohex-1-enyl]but-3-yn-2-one 
• 322474-93-1 (1R)-4-[(3S)-3-acetyloxybut-1-ynyl]-3,5,5-trimethylcyclohex-3-enol 
• 322474-94-2 (1R)-4-[(3R)-3-acetyloxybut-1-ynyl]-3,5,5-trimethylcyclohex-3-enol 
• 322474-89-5 Acetic acid (R)-4-((S)-3-hydroxy-but-1-ynyl)-3,5,5-trimethyl-cyclohex-3-enyl ester 
• 322474-90-8 Acetic acid (R)-4-((R)-3-hydroxy-but-1-ynyl)-3,5,5-trimethyl-cyclohex-3-enyl ester 
• 322474-87-3 4-({(4R)-4-[(1,1-dimethylethyl)dimethylsilyl]oxy}-2,6,6-trimethylcyclohex-1-enyl)but-3-yn-2-one 
• 322474-91-9 (S)-4-[(R)-4-(tert-Butyl-dimethyl-silanyloxy)-2,6,6-trimethyl-cyclohex-1-enyl]-but-3-yn-2-ol 
• 322474-92-0 (R)-4-[(R)-4-(tert-Butyl-dimethyl-silanyloxy)-2,6,6-trimethyl-cyclohex-1-enyl]-but-3-yn-2-ol 
• 162601-88-9 (2R,3S,4S,5R,6R)-2-Hydroxymethyl-6-[(S)-3-((R)-4-hydroxy-2,6,6-trimethyl-cyclohex-1-enyl)-1-methyl-prop-2-ynyloxy]-tetrahydro-pyran-3,4,5-triol 
• 162601-89-0 (3R,9R)-3-hydroxy-7,8-dehydro-ionol-9-O-β-D-glucopyranoside 
• 322474-97-5 (2R,3R,4S,5S,6R)-2-[(R)-4-((S)-3-Hydroxy-but-1-ynyl)-3,5,5-trimethyl-cyclohex-3-enyloxy]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol 

Relevant academic research and scientific papers

Synthesis of labile all-trans-7,8,7′,8′-bis-acetylenic carotenoids by bi-directional Horner-Wadsworth-Emmons condensation

A new stereoselective synthesis of the C40-bis-acetylenic carotenoids all-trans-(3R,3′R)-alloxanthin and all-trans-3,4,7,8,3′,4′,7′,8′-octadehydro-β,β-carotene, both compounds featuring a stereochemically labile C7-C10 enyne, based on a bi-directional Horner-Wadsworth-Emmons (HWE) reaction of a C15-phosphonate and a central C10-dialdehyde, is reported. The triene unit of the latter fragment was synthesized using the acyclic metathesis/dimerization reaction.

Synthesis of (3S,3′S)- and meso-stereoisomers of alloxanthin and determination of absolute configuration of alloxanthin isolated from aquatic animals

In order to determine the absolute configuration of naturally occurring alloxanthin, a HPLC analytical method for three stereoisomers 1a-c was established by using a chiral column. Two authentic samples, (3S,3?S)- and meso-stereoisomers 1b and 1c, were ch

Stereoselective total synthesis of the acetylenic carotenoids alloxanthin and triophaxanthin

Stereoselective total synthesis of the C40-diacetylenic carotenoid alloxanthin (1) and the C31-acetylenic apocarotenoid triophaxanthin (2) was accomplished by Wittig condensation of C 10-dialdehyde 20 or C16-ket

Total synthesis of naturally configured pyrrhoxanthin, a carotenoid butenolide from plankton

A carotenoid from the chemical kitchen: Two sequential Stille couplings of an unsymmetric distannane building block with a bromoolefin and a bromoalkyne terminated a highly convergent synthesis of the title compound, pyrrhoxanthin (see scheme).

88. Technical Procedures for the Syntheses of Carotenoids and Related Compounds from 6-Oxo-isophorone: Syntheses of (3R,3'R)-Zeaxanthin

Starting from the readily available, optically active (4R)-hydroxy-2,2,6-trimethylcyclohexanone (2), a new technical synthesis of (3R,3'R)-zeaxanthin is described.According to a completely new C9 + C2 + C4= C15 scheme, the ketone 2 was protected, ethynyla