Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Stanton Q. Smith"'
Publikováno v:
Tetrahedron Letters. 51:4150-4152
The synthesis of alkyl-substituted 2-pyrrolecarboxylate esters has been accomplished by the condensation reaction of a symmetrical vinamidinium salt and glycine ester derivatives.
Publikováno v:
Tetrahedron. 54:6259-6292
Two new analogs of catharanthine have been synthesized in racemic form. They differ from catharanthine in the fusion of the indole ring to the non-aromatic portion of the iboga skeleton, with the [2,3] fusion present in catharanthine being replaced b
Publikováno v:
ChemInform. 44
A novel method for the synthesis of pyrroles (III) via condensation of vinamidinium salts with nitrile (II) is developed.
Autor:
D. R. Wilkinson, Fred A. Hicks, Stanton Q. Smith, A. Denise Main, Scott A. Petrich, James A. Sikorski, Alan R. Katritzky, John T. Gupton
Publikováno v:
Tetrahedron. 49:10205-10218
A three step synthesis of a novel 2-(1-benzotriazolyl)-vinamidinium salt is described along with its direct conversion to a series of unusual 5-(1-benzotriazolyl) pyrimidines, 4-(1-benzotriazolyl)-pyrazoles, and 4-(1-benzotriazolyl) pyrroles.
Autor:
Stanton Q. Smith, Rene P.F. Kanters, Benjamin C. Giglio, Peter J. Barelli, Matthew J. Keough, Emily J. Kluball, Mona Hovaizi, Eric F. Worrall, John T. Gupton, Kara L. Finzel, Shane R. Nunes, James E. Eaton, Xin Jia, Jennifer M. Birnstihl, Timothy M. Smith, R. Scott Welden, Nakul Telang, Kayleigh E. Hall, Mathew T. Wright
Studies directed at the amine exchange reaction of vinamidinium salts followed by sodium borohydride reduction to secondary and tertiary allylic amines are described. The tertiary allylic amines were alkylated and subjected to base mediated rearrange
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f6777fb421a1979c14de522b4f5d3b1
https://europepmc.org/articles/PMC2990967/
https://europepmc.org/articles/PMC2990967/
Publikováno v:
ChemInform. 41
A new route is presented to synthesize pyrrole 2-carboxylates, pharmaceutically important substructures, via cyclocondensation of salts (I) with glycine esters.
Publikováno v:
ChemInform. 29
Autor:
Arnold Zdenek, James A. Sikorski, Stanton Q. Smith, Kathy M. Bevirt, Maria L. Dahl, John T. Gupton, Steve W. Riesinger, John E. Gall
Publikováno v:
Journal of Heterocyclic Chemistry. 28:1281-1285
An alternative preparation of a 2-iminovinamidinium salt from phosphonoacetic acids is described along with its application to the synthesis of 5-formylpyrimidines and masked 4-formylpyrazoles.
Publikováno v:
Tetrahedron Letters. 54:3965-3966
The synthesis of 1-methyl-2-cyano-4-arylsubstituted pyrroles by the condensation of symmetrical vinamidinium salts with methyl aminoacetonitrile has been accomplished for the first time. Simple experimental conditions were used to prepare seven diffe
Autor:
Stanton Q. Smith, Tappey H. Jones
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America. 101(21)
Although the concept of chemical prospecting, cataloging the chemical expression of an ecosystem, is gaining credence, exceptional biological activity observed in particular groups of plants, animals, or microorganisms has always attracted the attent