Results 271 to 280 of about 1,748 (310)

Conformations of acyclic sugar derivatives

Carbohydrate Research, 1972
Abstract The p.m.r. spectra of all the fully acetylated pentitols and several fully acetylated hexitols have been analysed. Computation by iterative analysis and recourse to 250-MHz spectra were required in several cases. The vicinal coupling constants were used to determine the conformations of these compounds in solution.
S.J. Angyal, R. Le Fur, D. Gagnaire
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An Ahlfors Derivative for Conformal Immersions

The Journal of Geometric Analysis, 2013
The author firstly defines the Ahlfors derivative \(\mathcal{A}\) of a conformal immersion \(F:(M^m,g)\to (P^n,h)\) that is the symmetric covariant tensor field of order two in \(M\) defined by \[ \mathcal{A}F=\mathcal{H}\varphi+\frac 12F^\ast(k_h h)+F^\ast\left(\nu^P_{F(M)}\right)-\frac 12 k_g g, \] where \(\| DF\| =e^\varphi\), the operator ...
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Conformational Analysis of Moreliene Derivatives

Journal of Natural Products, 1994
The conformation of a series of 4,8,8-trimethyl-9-methyleneperhydro-1,5-methanonaphthalene (moreliene) derivatives [1-6] was determined from 1 H-nmr coupling constants in combination with molecular modeling calculations. While the conformation of ring A remains essentially the same within the series, the conformation of ring B is sensitive to ...
Carlos M. Cerda-García-Rojas, Rosa E. del Río, Pedro Joseph-Nathan, Luisa U. Román, Juan D. Hernández   +4 more
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The conformation of thietane derivatives

Tetrahedron, 1971
Abstract The dipole moments of thietane derivatives were measured by the solution method, using benzene as a solvent; by comparing the observed and calculated values of these dipole moments the conformations and bond moments were also determined. 2,2-Diphenyl-3,4-dicyanothietane and 2,2-diphenyl-3,4-dichlorothietane have the same configuration as ...
S. Kumakura, T. Shimozawa, Y. Ohnishi, A. Ohno   +3 more
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Conformational and electronic effects in dehydroaminoacid derivatives

Journal of Molecular Structure, 1986
Abstract The electronic structure of the cyclic dipeptide of dehydrophenylalanine has been investigated by vapour-phase He(I) and He(II) UV photoelectron spectroscopy. Assignments are proposed by comparison with related molecules and supported by INDO/S calculations.
D. AJO, V. BUSETTI, CASARIN, MAURIZIO, H. C. J. OTTENHEIJM, R. PLATE, A. VITTADINI   +5 more
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Optical and Conformational Studies on Benzobisthiazole Derivatives

The Journal of Physical Chemistry B, 2010
2,6-Didodecyl-4,8-diphenyl-benzo[1,2-d;4,5-d']bisthiazole (3) and 2,6-didodecyl-4,8-dipyrrole-2-yl-benzo[1,2-d;4,5-d']bisthiazole (5) were synthesized, and their optical properties were investigated in solution and in the solid state. Compounds 3 and 5 were excited with the 325 nm He-Cd laser line to produce blue and green luminescence, respectively ...
Jun-Gill, Kang, Hyun-Joon, Kim, Yong-Kwang, Jeong, Min-Kook, Nah, Changmoon, Park, Young Ju, Bae, Sang Woo, Lee, In Tae, Kim   +7 more
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Conformations of cyclopropane derivatives

Journal of Molecular Structure, 1985
Wolfgang H. Ries, Ivan Bernal
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Conformation of bicyclo [n.1.0] derivatives

Journal of Molecular Structure: THEOCHEM, 1981
Giorgio Favini, Manuela Sottocornola, Roberto Todeschini   +2 more
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Scalar-Conformal Derivatives and Chiral-Conformal Lagrangians

Physical Review D, 1971
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