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)。
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-<i>trans</i>-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
申请人:INOTEK PHARMACEUTICALS CORP
公开号:WO2006034190A3
公开(公告)日:2008-11-27
IBRAHIM, N.;EGGIMANN, T.;DIXON, E. A.;WIESER, H., TETRAHEDRON, 46,(1990) N, C. 1503-1514
作者:IBRAHIM, N.、EGGIMANN, T.、DIXON, E. A.、WIESER, H.