已经报道了通过修饰腺苷 5'- N-乙基甲酰胺(NECA)合成有效的腺苷 A 2A和 A 3受体激动剂。具有 ( R )-3,4-二氢-2 H-吡喃基 (DHP) 部分的非对映异构体对A 2A和 A 3受体表现出最高的亲和力。关键步骤包括 ( R )-3,4-dihydro-2 H -pyran-2-carboxaldehyde ( 7 )的合成,它是通过 (±)-2-acetoxymethyl-3 的酶催化动力学拆分获得的, -1,4-二氢- 2 ħ吡喃(5)。
已经报道了通过修饰腺苷 5'- N-乙基甲酰胺(NECA)合成有效的腺苷 A 2A和 A 3受体激动剂。具有 ( R )-3,4-二氢-2 H-吡喃基 (DHP) 部分的非对映异构体对A 2A和 A 3受体表现出最高的亲和力。关键步骤包括 ( R )-3,4-dihydro-2 H -pyran-2-carboxaldehyde ( 7 )的合成,它是通过 (±)-2-acetoxymethyl-3 的酶催化动力学拆分获得的, -1,4-二氢- 2 ħ吡喃(5)。
Activity-Directed Synthesis with Intermolecular Reactions: Development of a Fragment into a Range of Androgen Receptor Agonists
作者:George Karageorgis、Mark Dow、Anthony Aimon、Stuart Warriner、Adam Nelson
DOI:10.1002/anie.201506944
日期:2015.11.9
Activity‐directed synthesis (ADS), a novel discovery approach in which bioactive molecules emerge in parallel with associated syntheses, was exploited to develop a weakly binding fragment into novel androgenreceptoragonists. Harnessing promiscuous intermolecularreactions of carbenoid compounds enabled highly efficient exploration of chemical space. Four substrates were prepared, yet exploited in
The absolute configuration of 6,8-dioxabicyclo[3.2.1]octane and several methyl substituted derivatives
作者:N. Ibrahim、T. Eggimann、E.A. Dixon、H. Wieser
DOI:10.1016/s0040-4020(01)81959-1
日期:1990.1
enantiomers of 6,8-dioxabicyclo[3.2.1]octane and the alkyl substituted derivatives, exo- and endo-7-methyl, exo- and endo-5,7-dimethyl, 7,7-dimethyl, and exo- and endo-7-ethyl-5-methyl (exo- and endo-brevicomin), were synthesized stereoselectively with known configuration by standard synthetic methods, or with baker's yeast, or both. The correlation between the absoluteconfiguration of the bicyclic rings and
Synthesis of 2,6-trans-Tetrahydropyrans Using a Palladium-Catalyzed Oxidative Heck Redox-Relay Strategy
作者:Holly E. Bonfield、Colin M. Edge、Marc Reid、Alan R. Kennedy、David D. Pascoe、David M. Lindsay、Damien Valette
DOI:10.1021/acs.orglett.3c03866
日期:2024.4.12
novel synthetic approaches. We demonstrate the application of a stereoselective Heck redox-relay strategy for the synthesis of functionalized 2,6-trans-tetrahydropyrans in excellent selectivity in a single step from an enantiopure dihydropyranyl alcohol, proceeding through a novel exo-cyclic migration. The strategy has also been applied to the total synthesis of a trans-epimer of the natural product centrolobine
Enzymatic synthesis of optically active (S)-(+)-2-hydroxymethyl-3,4-dihydro-2H-pyran and (S)-(+)-2-acetoxymethyl-3,4-dihydro-2H-pyran
作者:Suk-Ku Kang、Jae-Ho Jeon、Tokutarou Yamaguchi、Ryung-Kee Hong、Byoung-Seob Ko
DOI:10.1016/0957-4166(94)00361-e
日期:1995.1
Porcine pancreas lipase(PPL)-catalyzed acetylation of(+/-)-2-hydroxymethyl-3,4-dihydro-2H-pyran with vinyl acetate in organic solvent afforded (S)-(+)-2-acetoxymethyl-3,4-dihydro-2H-pyran. Alternatively, (+/-)-2-acetoxymethyl-3,4-dihydro-2H-pyran was resolved via hydrolysis catalyzed by PPL in acetone-phosphate buffer system to afford (S)-(+)-2-hydroxymethyl-3,4-dihydro-2H-pyran with high enantiomeric purity.
[EN] PURINE DERIVATIVES AND METHODS OF USE THEREOF<br/>[FR] DÉRIVÉS DE LA PURINE ET LEURS PROCÉDÉS D'UTILISATION