Zobrazeno 1 - 10 of 20 pro vyhledávání: '"Hans Vallberg"'
1
Synthesis of pyridopyrazino[2,3-b]indoles and 10H-indolo[3,2-g]pteridins
Autor: Charlotta Damberg, Jan Bergman, Hans Vallberg
Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 115:31-36
The reactions between isatin (8a) and N-acetylisatin (8b) with pyridine-2,3-diamine (9a), pyridine-3,4-diamine (9b) and pyrimidine-4,5-diamine (21) were studied. 10H-Pyrido[3′,2′:5,6]pyrazino[2,3-b]indole (5a), 6H-pyrido[2′,3′:5,6]-pyrazino[2
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93632ee1eab4d2ebec8e6fc3c0d2b72f
https://doi.org/10.1002/recl.19961150107
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2
Total synthesis of Epothilone E and related side-chain modified analogues via a stille coupling based strategy1This paper is dedicated with admiration and respect to the memory of Sir Derek H. R. Barton.1
Autor: Kyriacos C. Nicolaou, S. Ninkovic, Hans Vallberg, N. P. King, F. Sarabia, Frank Roschangar, Yun He, Dionisios Vourloumis, M. R. V. Finlay, David Hepworth
Publikováno v: Bioorganic & Medicinal Chemistry. 7:665-697
A Stille coupling strategy has been utilized to complete a total synthesis of epothilone E from vinyl iodide 7 and thiazole-stannane 8h. The central core fragment 7 and its trans-isomer 11 were prepared from triene 15 using ring-closing metathesis (R
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c12845ba2ed3f5cb9cf5381aad2c52c6
https://doi.org/10.1016/s0968-0896(98)00153-9
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3
Total Synthesis of Oxazole- and Cyclopropane-Containing Epothilone A Analogues by the Olefin Metathesis Approach
Autor: Frank Roschangar, Kyriacos C. Nicolaou, Hans Vallberg, Christopher G. Nicolaou, N. Paul King, Dionisios Vourloumis, Yun He
Publikováno v: Chemistry - A European Journal. 3:1957-1970
For structure-activity relationship studies, two series of epothilone A (1) analogues have been designed and synthesized, one containing an oxazole moiety instead of the thiazole heterocycle and the other containing a spirocyclopropane moiety in plac
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3b0502d0deedc022700412d9baa0638
https://doi.org/10.1002/chem.19970031211
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5
Total Syntheses of Epothilones A and B via a Macrolactonization-Based Strategy
Autor: Dionisios Vourloumis, Kyriacos C. Nicolaou, Zhen Yang, F. Sarabia, Hans Vallberg, S. Ninkovic, M. R. V. Finlay, Yun He
Publikováno v: Journal of the American Chemical Society. 119:7974-7991
The total syntheses of epothilones A (1) and B (2) and several analogues thereof are described. The reported strategy relies on a macrolactonization approach and features selective epoxidation of the macrocycle double bond in precursors 3 and 4 (Sche
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f0f45f8acc6f26b3728da9ed890ec21d
https://doi.org/10.1021/ja971110h
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6
The Olefin Metathesis Approach to Epothilone A and Its Analogues
Autor: John I. Trujillo, Dionisios Vourloumis, F. Sarabia, Kyriacos C. Nicolaou, Frank Roschangar, S. Ninkovic, Yun He, Zhen Yang, Hans Vallberg
Publikováno v: Journal of the American Chemical Society. 119:7960-7973
The olefin metathesis approach to epothilone A (1) and several analogues (39−41, 42−44, 51−57, 58−60, 64−65, and 67−69) is described. Key building blocks 6−8 were constructed in optically active form and were coupled and elaborated to o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b7d7b3c3070aaa1bbae8cef0eb90b8a
https://doi.org/10.1021/ja971109i
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