Fluoride anion-induced intramolecular cyclopropanation of allylsilanes
作者:Airat M. Gimazetdinov、Aidar Z. Al'mukhametov、Leonid V. Spirikhin、Mansur S. Miftakhov
DOI:10.1016/j.tetlet.2017.07.023
日期:2017.8
The reaction of cyclopentenylsilane derivatives with n-Bu4NF in THF at rt was shown to proceed with the regio- and stereoselective formation of the corresponding bicyclo[3.1.0]hex-2-ene derivatives.
Some aspects of intramolecular carbocyclization of methyl (2E)-3-[(1S,2R,5R)-2-({[tert-butyl(dimethyl)-silyl]oxy}methyl)-5-(trimethylsilyl)cyclopent-3-en-1-yl]prop-2-enoate and its derivatives
作者:A. M. Gimazetdinov、A. Z. Al’mukhametov、L. V. Spirikhin、M. S. Miftakhov
DOI:10.1134/s1070428017060057
日期:2017.6
Treatment of methyl (2E)-3-[(1S,2R,5R)-2-([tert-butyl(dimethyl)silyl]oxy}methyl)-5-(trimethylsilyl) cyclopent-3-en-1-yl]prop-2-enoate with Bu4NF in THF resulted in intramolecular cyclization with formation of bicyclo[3.1.0]hexene structure. Possible ways of cyclopropane ring closure were discussed. Methyl (2E)-3-[(1R,4R,5S)-5-formyl-4-(trimethylsilyl)cyclopent-2-en-1-yl]prop-2-enoate failed to undergo
Synthetic Approaches to 15-Deoxy-Δ12,14-prostaglandin J2. A New Key Building Block Based on (3aR,6R,6aS)-6-Trimethylsilyl)-3,3a,6,6a-tetrahydro-1H-cyclopenta[c]furan-1-one
作者:A. M. Gimazetdinov、A. Z. Al’mukhametov、M. S. Miftakhov
DOI:10.1134/s1070428019060137
日期:2019.6
(1S,4R,5R)-5-[tert-Butyl(dimethyl)silyloxymethyl]-4-hydroxycyclopent-2-en-1-yl}acetaldehyde, the key building block in a possible approach to 15-deoxy-Delta(12,14)-prostaglandin J(2), has been synthesized starting from (3aR,6R,6aS)-6-(trimethylsilyl)-3,3a,6,6a-tetrahydro-1H-cyclopenta[c]furan-1-one.
A convenient synthesis of enantiopure (4aS,7aR)-1,4,4a,7a-tetrahydrocyclopenta[c]pyran-3,7-dione
作者:Aidar Z. Al’mukhametov、Airat M. Gimazetdinov、Mansur S. Miftakhov
DOI:10.1016/j.mencom.2020.01.003
日期:2020.1
The title compound, as the new chiral building block for bioactive cyclopentenones, was prepared in 8 steps with 15% overall yield. The key steps involve selective homologation in intermediate [(1S,2R,5R)-5-trimethysilylcyclopent-3-ene1,2-diyl]dimethanol by regioselective silylation followed by oxidation and the Wittig reaction.
Synthesis of (+)-didesmethylmethylenomycin A methyl ester
作者:Airat M. Gimazetdinov、Salavat S. Gataullin、Vladimir V. Loza、Mansur S. Miftakhov
DOI:10.1016/j.tet.2013.09.047
日期:2013.11
A concise and efficient synthesis of the new compound-(+)-didesmethylmethylenomycin A methyl ester from chiral building block 4 has been achieved. (c) 2013 Elsevier Ltd. All rights reserved.