共查询到19条相似文献,搜索用时 62 毫秒
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Bernhard Schnenberger Walter Summermatter Camille Ganter 《Helvetica chimica acta》1982,65(7):2333-2337
An enantioselective synthesis of key intermediates for the synthesis of the anti-microbially active pseudomonic acids A ( 1 ), B ( 2 ) and C ( 3 ) is described. D -Ribose ( 4 ) was used as starting material. 相似文献
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Three new organo-bridged coupled compounds, as the key intermediates in a new route, so-called Stepwise Coupling Polymerization, were synthesized in high yields by preamminolysis reaction. 相似文献
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This paper presents new synthetic routes for methyl cis-7-iodo-5-heptenoate (7) and 3-hydroxycyclopent-2-enone (15a), useful intermediates in the synthesis of prostanoids. 相似文献
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Dylan Dagoneau Amandine Kolleth Pierre Quinodoz Gamze Tanriver Saron Catak Alexandre Lumbroso Sarah Sulzer-Mossé Alain De Mesmaeker 《Helvetica chimica acta》2020,103(1):e1900217
Herein, we describe a high yielding approach towards the synthesis of 3-amino-indoles and -benzofurans through 6π-electrocyclization. This was made possible by taking advantage of the high reactivity of keteniminium salts, formed in-situ by treating with triflic anhydride and 2-fluoropyridine amides bearing at the α-position either an aniline or a phenoxy moiety. These mild conditions, on top of furnishing rapidly the 3-aminobenzoheteroles, allow the tolerance of various functional groups. Control experiments were carried out to highlight that the keteniminium is, indeed, in most cases, the reactive intermediate and conformational preferences of such species were investigated through a DFT study. 相似文献
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José A. Bacigaluppo María I. Colombo Marcelo D. Preite Juan Zinczuk Edmundo A. Rúveda 《合成通讯》2013,43(14):2737-2749
A short route for the preparation of highly oxygenated trans-decalines, key intermediates for the synthesis of nimbolide (2a) and nagilactone A (13), by a sequence involving a Michael addition followed by an aldol condensation, is described. 相似文献