A practical synthesis of 2-deoxy aldonolactones via a SmI2-mediated α-deoxygenation reaction
摘要:
A one-step deoxygenation of 2-hydroxylactones or their acetates is possible using samarium diiodide as an electron-transfer reagent in conjunction with a proton source.
Stereoselective Photochemical 1,3-Dioxolane Addition to <i>5-</i>Alkoxymethyl-2(5<i>H</i>)-furanone: Synthesis of Bis-tetrahydrofuranyl Ligand for HIV Protease Inhibitor UIC-94017 (TMC-114)
作者:Arun K. Ghosh、Sofiya Leshchenko、Marcus Noetzel
DOI:10.1021/jo049156y
日期:2004.11.1
A convenient synthesis of (3R,3aS,6aR)-3-hydroxyhexahydrofuro[2,3-b]furan, a high-affinity nonpeptidal ligand for HIV protease inhibitor UIC-94017, is described. This inhibitor is undergoing advanced clinical trials. The synthesis utilizes a novel stereoselective photochemical 1,3-dioxolane addition to 5(S)-benzyloxymethyl-2(5H)-furanone as the key step. The requisite furanone derivative was prepared
描述了一种方便合成的(3 R,3a S,6a R)-3-羟基六氢呋喃[2,3- b ]呋喃,这是一种针对HIV蛋白酶抑制剂UIC-94017的高亲和力非肽配体。该抑制剂正在接受先进的临床试验。合成过程中,除了5(S)-苄氧基甲基-2(5 H)-呋喃酮外,还利用了新型的立体选择性光化学1,3-二氧戊环。通过固定的脂肪酶催化的(±)-1-(苄氧基)-3-丁烯-2-醇的固定化酰化反应和用Grubbs的催化剂进行的闭环烯烃复分解反应,以高对映体过量的形式制备必需的呋喃酮衍生物。将光学活性的双-THF转化为蛋白酶抑制剂2(UIC-94017)。
Photochemical [2 + 2] Cycloaddition of Acetylene to Chiral 2(5<i>H</i>)-Furanones
作者:Ramon Alibés、Pedro de March、Marta Figueredo、Josep Font、Xiaolin Fu、Marta Racamonde、Ángel Álvarez-Larena、Juan F. Piniella
DOI:10.1021/jo0264731
日期:2003.2.1
The [2 + 2] photocycloaddition of acetylene to chiral 2(5H)-furanones was investigated. The influence on the chemical yield and facial diastereoselectivity of the substituent at the stereogenic center and also the effect of a 4-methyl group were evaluated. A mechanistic proposal based on a simple theoretical conformational analysis is presented. Using a C(2)-symmetric bis(lactone) as the substrate
Method of preparing (3R, 3aS, 6aR) -3-hydroxyhexahydrofuro [2,3,-b] furan and related compounds
申请人:——
公开号:US20040127727A1
公开(公告)日:2004-07-01
A method of synthesizing (3R,3aS,6aR)-3-hydroxyhexahydrofuro[2,3-b]furan (I), and related compounds, in high yield and high enantiomeric selectivity is disclosed.
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Also disclosed is a method of manufacturing (5S)-5-(benzyloxymethyl)-5H-furan-2-one.
Method of preparing (3R, 3aS, 6aR)-3-hydroxyhexahydrofuro[2,3,-b] furan and related compounds
申请人:Ghosh Arun K.
公开号:US06919465B2
公开(公告)日:2005-07-19
A method of synthesizing (3R,3aS,6aR)-3-hydroxyhexahydrofuro[2,3-b]furan (I), and related compounds, in high yield and high enantiomeric selectivity is disclosed.
Also disclosed is a method of manufacturing (5S)-5-(benzyloxymethyl)-5H-furan-2-one.
[EN] METHOD OF PREPARING (3R, 3aS, 6aR) -3- HYDROXYHEXAHYDROFURO [2, 3-b] FURAN AND RELATED COMPOUNDS<br/>[FR] PROCEDE DE PREPARATION DE (3R, 3AS, 6AR) -3- HYDROXYHEXAHYDROFURO [2, 3-B] FURANE ET DE COMPOSES APPARENTES