Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Chu-Yi Yu"'
Autor:
Xin Yan, Yuna Shimadate, Atsushi Kato, Yi-Xian Li, Yue-Mei Jia, George W. J. Fleet, Chu-Yi Yu
Publikováno v:
Molecules, Vol 25, Iss 7, p 1498 (2020)
Ten pairs of pyrrolidine analogues of pochonicine and its stereoisomers have been synthesized from four enantiomeric pairs of polyhydroxylated cyclic nitrones. Among the ten N-acetylamino pyrrolidine analogues, only compounds with 2,5-dideoxy-2,5-imi
Externí odkaz:
https://doaj.org/article/f91105ed7f0b4b0b8e22e1dfcd4e7123
Autor:
Qing-Kun Wu, Kyoko Kinami, Atsushi Kato, Yi-Xian Li, Yue-Mei Jia, George W. J. Fleet, Chu-Yi Yu
Publikováno v:
Molecules, Vol 24, Iss 20, p 3712 (2019)
Cross-metathesis (CM) and Keck asymmetric allylation, which allows access to defined stereochemistry of a remote side chain hydroxyl group, are the key steps in a versatile synthesis of broussonetine M (3) from the d-arabinose-derived cyclic nitrone
Externí odkaz:
https://doaj.org/article/55ffc8a9900e4cb3a75fe0e9beb990ea
Publikováno v:
Molecules, Vol 18, Iss 6, Pp 6723-6733 (2013)
Protected L-homoDMDP en-8 and its C-6 epimer en-7 were prepared through two different pathways starting from the vinylpyrrolidine en-9. Based on the NMR and X-ray analysis, the stereochemistry of homoDMDP at C-6 was confirmed to be consistent with re
Externí odkaz:
https://doaj.org/article/f60e00fac4a94bbfbd20a77a2567215e
Publikováno v:
Molecules, Vol 18, Iss 5, Pp 6021-6034 (2013)
D-Glucopyranose-derived and L-idopyranose-derived piperidine nitrones were synthesized in good overall yields through six-step reaction sequence starting from readily available 2,3,4,6-tetra-O-benzyl-D-glucopyranose. The method is efficient and could
Externí odkaz:
https://doaj.org/article/8f56c9b35fec4eba8128dc90177cf7c6
Publikováno v:
ARKIVOC, Vol 2003, Iss 2, Pp 146-154 (2003)
Externí odkaz:
https://doaj.org/article/879930d68cde47d2b9eec3d3f2d4dfce
Publikováno v:
ARKIVOC, Vol 2003, Iss 2, Pp 1-6 (2002)
Externí odkaz:
https://doaj.org/article/b026a61d058a4364b106e72b6411b709
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 7, Pp o1036-o1036 (2013)
In the title compound, C11H11NO3S2, the S—Csp2 bonds are shorter [1.746 (3) and 1.750 (2) Å] than the S—CH3 bonds [1.794 (3) and 1.806 (3) Å], which we attribute to d–π interactions between the S atoms and the C=C bond. The 1,1-bis(methylsul
Externí odkaz:
https://doaj.org/article/6ed19d0a775b4ec780d96115997d6f31
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 6, Pp o986-o986 (2013)
The asymmetric unit of the title compound, C19H19N3O4, contains two molecules with very few conformational differences; a C atom in the pyrimidine ring in one of the molecules is disordered in a 0.688 (15):0.312 (15) ratio. In both molecules, the fus
Externí odkaz:
https://doaj.org/article/a38f5a10a94c43ff916d4263ad56708e
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 6, Pp o971-o971 (2013)
In the title compound, C13H15ClN2O, there are two crystallographically independent but conformationally similar (E)-molecules in the asymmetric unit [dihedral angles between the phenyl ring and a common planar fragment of the 1,3-diazepane moiety = 4
Externí odkaz:
https://doaj.org/article/a8dd80bb157041af95413a442016858a
Autor:
Amber L. Thompson, Agnieszka Michalik, Robert J. Nash, Francis X. Wilson, Renate van Well, Peter Johnson, George W. J. Fleet, Chu-Yi Yu, Xiang-Guo Hu, Richard I. Cooper, David J. Watkin
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 11, Pp o2904-o2905 (2009)
X-ray crystallographic analysis of the title hydrobromide salt, C10H20N+·Br−, of (1R,2S,3R,5R,8aR)-3-hydroxymethyl-5-methyloctahydroindolizine-1,2-diol defines the absolute and relative stereochemistry at the five chiral centres in steviamine, a n
Externí odkaz:
https://doaj.org/article/5291fcab05ff425dbeb8474867a68d7c