Zobrazeno 1 - 10
of 11
pro vyhledávání: '"35"'
Publikováno v:
Journal of the American Chemical Society. 143:7306-7313
A Co-catalyzed highly regio- and enantioselective reductive coupling of alkynes and aldehydes has been developed under visible light photoredox dual catalysis. A variety of enantioenriched allylic alcohols have been obtained by using unsymmetrical in
Publikováno v:
Wilting, J, Janssen, M H M, Muller, C J & Vogt, D 2006, ' The enantioselective step in the nickel-catalyzed hydrocyanation of 1,3-cyclohexadiene ', Journal of the American Chemical Society, vol. 128, no. 35, pp. 11374-5 . https://doi.org/10.1021/ja064378u
Journal of the American Chemical Society, 128(35), 11374-11375. American Chemical Society
Journal of the American Chemical Society, 128(35), 11374-5. American Chemical Society
Journal of the American Chemical Society, 128(35), 11374-11375. American Chemical Society
Journal of the American Chemical Society, 128(35), 11374-5. American Chemical Society
On the basis of deuterium labeling experiments and an equal 1,2-/1,4-product distribution, the reductive elimination of the product has been established to be the enantioselective step in the nickel-catalyzed hydrocyanation of 1,3-cyclohexadiene. Thi
Publikováno v:
Journal of the American Chemical Society. 119:12014-12015
Many of the acetogenins isolated from the Annonaceae plants1 have shown remarkable cytotoxic, antitumor, antimalarial, immunosuppressive, pesticidal, and antifeedant activities.2 Classification of these fatty acid derivatives into three subgroups is
Publikováno v:
Journal of the American Chemical Society. 134:11952-11955
Oligosaccharide synthesis is hindered by the need for multiple steps as well as numerous selective protections and deprotections. Herein we report a highly efficient de novo route to various oligosaccharide motifs, of use for biological and medicinal
Autor:
David C. Dorn, Kai Da Wu, Christoph Gaul, Dandan Shan, Xin-Yun Huang, Jon T. Njardarson, William P. Tong, Malcolm A.S. Moore, Samuel J. Danishefsky
Publikováno v:
Journal of the American Chemical Society. 126:11326-11337
The first asymmetric total synthesis of (+)-migrastatin (1), a macrolide natural product with anti-metastatic properties, has been accomplished. Our concise and flexible approach utilized a Lewis acid-catalyzed diene aldehyde condensation (LACDAC) to
Autor:
Kenneth G. Hull, Gregory K. Friestad, Makoto Iwashima, Amos B. Smith, Emmanuel Bertounesque, Jingwu Duan, Brian A. Salvatore, Joseph Barbosa, and P. Grant Spoors, Yuping Qiu
Publikováno v:
Journal of the American Chemical Society. 121:10468-10477
An asymmetric synthesis of the stereochemically fully endowed C(9−25) spiroketal fragment (+)-BC of the calyculins (1−8) is described. Highlights of the synthesis include: a highly diastereoselective IBr-induced iodocarbonate cyclization to intro
Publikováno v:
Journal of the American Chemical Society. 121:700-709
Enantioselective total syntheses of aloperine (1), N-methylaloperine (2), and N-allylaloperine (3) are reported. The central element of the synthetic strategy is an intramolecular Diels−Alder reaction in which the cycloaddends are tethered by a N-s
Publikováno v:
Journal of the American Chemical Society. 119:9662-9671
A practical route for the total synthesis of 8,9-secokaurene diterpenes is described. The central step is the [3.3]sigmatropic rearrangement of spirocyclic intermediates such as 35, 40, and 41. All three compounds must necessarily respond identically
Autor:
Takao Saito, Kiyoto Hori, Noboru Sayo, Noriyoshi Arai, Kazuhiko Hiratsuka-shi Matsumura, Takeshi Ohkuma
Publikováno v:
Journal of the American Chemical Society. 133(28)
A novel ruthenabicyclic complex with base shows excellent catalytic activity in the asymmetric hydrogenation of ketones. The turnover frequency of the hydrogenation of acetophenone reaches about 35 000 min–1 in the best case, affording 1-phenyletha
Publikováno v:
Journal of the American Chemical Society, 130(35), 11783-11790. AMER CHEMICAL SOC
This study shows that the role of DNA in the DNA-based enantioselective Diels-Alder reaction of azachalcone with cyclopentadiene is not limited to that of a chiral scaffold. DNA in combination with the copper complex of 4,4'-dimethyl-2,2'-bipyridine