ASYMMETRIC ADDITION OF ACETYLIDE TO ALIPHATIC ALDEHYDES—PREPARATION OF OPTICALLY ACTIVE 5-OCTYL-2(5<i>H</i>)-FURANONE—
作者:Teruaki Mukaiyama、Keisuke Suzuki
DOI:10.1246/cl.1980.255
日期:1980.3.5
Various optically active acetylenic alcohols (40-80%e.e.) were obtained by enantioface-differentiatingaddition of lithium trimethylsilylacetylide to aliphatic aldehydes utilizing (2S, 2′S)-2-hydroxymethyl-1-[(1-methylpyrrolidin-2-yl)methyl]pyrrolidine as a chiralligand. Optically active (R)-1-trimethylsilyl-l-undecyn-3-ol (80%e.e.) was transformed into optically active 5-octyl-2(5H)-furanone in good
Masked cerulenin enables a dual-site selective protein crosslink
作者:Ziran Jiang、Aochiu Chen、Jeffrey Chen、Arman Sekhon、Gordon V. Louie、Joseph P. Noel、James J. La Clair、Michael D. Burkart
DOI:10.1039/d3sc02864j
日期:——
Protein-reactivenaturalproducts such as the fungal metabolite cerulenin are recognized for their value as therapeutic candidates, due to their ability to selectively react with catalytic residues within a protein active site or a complex of protein domains. Here, we explore the development of fatty-acid and polyketide-synthase probes by synthetically modulating cerulenin's functional moieties. Using
蛋白质反应性天然产物(例如真菌代谢物浅蓝菌素)因其能够选择性地与蛋白质活性位点或蛋白质结构域复合物内的催化残基发生反应而被认为是治疗候选物的价值。在这里,我们通过合成调节浅蓝素的功能部分来探索脂肪酸和聚酮合酶探针的开发。使用基于机制的方法,我们揭示了浅蓝素内独特的反应性,并使其适用于脂肪酸和迭代 I 型聚酮合酶的荧光标记和交联。我们还描述了两类新的甲硅烷基氰醇和甲硅烷基半胺醛掩蔽交联探针,它们可作为这些生物合成途径的活性和结构研究的新工具。
Lipase catalysed resolution of (R)- and (S)-1-trimethylsilyl-1-alkyn-3-ols: useful intermediates for the synthesis of optically active γ-lactones
Various (R)- and (S)-1-trimethylsilyl-1-alkyn-3-ols, chiral building units useful for the synthesis of biologically active compounds, have been efficiently resolved by enantioselective acetylation mediated by immobilized lipase PS. The resolution is applied to the synthesis of (R)- and (S)-5-octyl-2-(5H)-furanones. (C) 1997, Elsevier Science Ltd. All rights reserved.
Preparation d'alkyl-4 γ-lactones insaturee optiquement pures. Application a la synthese de la (+) tetrahydrocerulenine.
作者:J.P. Vigneron、J.M. Blanchard
DOI:10.1016/s0040-4039(00)77824-5
日期:1980.1
VIGNERON J. P.; BLOY V., TETRAHEDRON LETT., 1980, 21, NO 18, 1735-1738