Construction of Chemical Libraries of Volatile Compounds by Combinatorial Synthesis of Homologous Mixtures: Alk‐4‐en‐1‐ols, Alk‐4‐enals and Methyl Alk‐4‐enoates
作者:Coline Perrin、Nicolas Baldovini
DOI:10.1002/cbdv.202200817
日期:2023.2
for their identification in GC/MS analyses. We demonstrate here that compound libraries can be prepared by combinatorial syntheses using long linear synthetic sequences, i. e., eight step in the case of 4-enals. The resulting mixtures of homologues are still perfectly exploitable to deliver the requested information such as clean mass spectra and good gaschromatographicretentionindices.
包含 66 个线性化合物的化合物库,六个分子家族的 11 个代表:( E )- 和 ( Z )-alk-4-en-1-ols、alk-4-enals 和甲基 alk-4-enoates 的异构体, 是通过组合合成制备的, 以允许创建直接可用于在 GC/MS 分析中识别它们的质谱数据库。我们在这里证明化合物库可以通过使用长线性合成序列的组合合成来制备,即。即,在 4-enals 的情况下为八步。由此产生的同系物混合物仍然可以完美地用于提供所需的信息,例如干净的质谱和良好的气相色谱保留指数。
Total Synthesis of Acanthacerebroside A and Astrocerebroside A via a Chiral Epoxide Intermediate Derived from L-Quebrachitol
was synthesized from naturally occurring cyclitol, L-quebrachitol via the conduramine derivative, which was prepared regio- and stereoselectively by the Pd-catalyzed azidation of the allyl carbonate derivative. Condensation of phytosphingosines with 2-acetoxy fatty acid residue, followed by glycosidation, furnished the total synthesis. This work established an effective synthetic pathway to a wide
描述了从海星中分离的新型脑苷脂、棘突脑苷脂 A (1) 和星形脑苷脂 A (2) 的手性和立体选择性全合成。1 和 2 中的植物鞘氨醇部分是通过二烷基镁试剂与常见的环氧化物中间体 2-(t-butoxycarbonyl)amino-1-O-(t-butyldiphenylsilyl)-2-deoxy-3-O-( 4-甲氧基苄基)-D-4,5-脱水核糖醇 (5)。环氧化物 (5) 是由天然存在的环醇、L-白木糖醇通过康杜拉明衍生物合成的,该衍生物是通过 Pd 催化的碳酸烯丙酯衍生物的叠氮化反应制备的。植物鞘氨醇与 2-乙酰氧基脂肪酸残基的缩合,然后是糖苷化,提供全合成。这项工作建立了一种有效的合成途径,可合成含有多种植物鞘氨醇和 2-羟基脂肪酸残基的多种脑苷脂;第一次全合成astrocerebroside A (2) 充分证实了所提出的结构。