A comparative study of the synthetic paths from 1-butyne to 2E,4Z-heptadien-1-ol
作者:M. V. Mavrov、Z. G. Chrelashvili、E. P. Serebryakov
DOI:10.1007/bf00704017
日期:1993.4
4Z-Heptadien-1-ol (1), the key intermediate in the synthesis of the grapevine moth sex pheromone, was obtained from 1-butyne by a number of alternative procedures, including various variants of the stereocontrolled building of the conjugatedE,Z-diene system (Cadiot—Chodkiewicz cross-coupling, alkyne—vinyl halide cross-coupling catalyzed by palladium complexes, anionotropic allylic rearrangement, partialcis- andtrans-reduction
Manganese(III)-mediated oxidative free-radical cyclisations of allenyl malonates
作者:Lucy Curry、Michal S. Hallside、Luke H. Powell、Simon J. Sprague、Jonathan W. Burton
DOI:10.1016/j.tet.2009.09.112
日期:2009.12
The regioselective synthesis of alkenylcyclanones by the oxidative radical cyclisation of malonyl radicals onto both allenes and an allylsilane is reported, along with the diastereoselective formation of [3.3.0]-bicyclic γ-lactones from two of these alkenylcyclanones. Furthermore, the cyclisation of 3-, 4- and 5-allenyl malonates on exposure to manganese(III) acetate under both oxidative and reductive
Orthoester compositions for affinity purification of oligonucleotides
申请人:Agilent Technologies, Inc.
公开号:US11299483B2
公开(公告)日:2022-04-12
Compounds and methods for purifying oligonucleotides such as RNA and DNA. A target oligonucleotide is reacted with an orthoester linker comprising an affinity tag to form an orthoester oligonucleotide-orthoester linker conjugate which is subjected to a purification technique to separate the target oligonucleotide from impurities such as truncated oligonucleotides. The orthoester linker can be then removed under mild conditions to generate the target oligonucleotide in high purity.
用于纯化 RNA 和 DNA 等寡核苷酸的化合物和方法。目标寡核苷酸与包含亲和性标签的正交酯连接体反应,形成正交酯寡核苷酸-正交酯连接体共轭物,该共轭物通过纯化技术从截短寡核苷酸等杂质中分离出目标寡核苷酸。然后在温和的条件下去除正交酯连接体,生成高纯度的目标寡核苷酸。
Ma, Shengming; Negishi, Ei-Ichi, Journal of the American Chemical Society, 1995, vol. 117, # 23, p. 6345 - 6354
作者:Ma, Shengming、Negishi, Ei-Ichi
DOI:——
日期:——
Effect of substitution on homoallenic participation in solvolyses