Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Fred L. Tobiason"'
Publikováno v:
Journal of Carbohydrate Chemistry. 19:959-974
The flexible ring structures of α- and β-D-idopyranose have been investigated by conformational analysis using structures generated by MacroModel and GMMX search protocols. The lowest energy structures found during the conformer search for the 4 C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52d5ea6a693146b02e5ed75d23fcd6f2
https://doi.org/10.1080/07328300008544128
https://doi.org/10.1080/07328300008544128
Publikováno v:
Journal of Molecular Structure: THEOCHEM. :173-185
The gmmx global searching program was applied to D -glucitol and α- and β- D -glucopyranose to predict the 3 J HH nuclear magnetic resonance (NMR) coupling constants, which were then compared with the experimental NMR values determined in aqueous s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46dfd2ce539c920d7622eac8da06a02f
https://doi.org/10.1016/s0166-1280(96)04950-0
https://doi.org/10.1016/s0166-1280(96)04950-0
Publikováno v:
Magnetic Resonance in Chemistry. 34:424-433
Studies of flavan-3-ols in their biologically significant phenolic form show that both H-6 and C-6 resonances are downfield from H-8 and C-8. Therefore, assignments for the H atoms of the A-ring are inverse to those commonly reported. By contrast, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a2c6091d043626f8791b55ab8ce8b8d
https://doi.org/10.1002/(sici)1097-458x(199606)34:6<424::aid-omr902>3.0.co
https://doi.org/10.1002/(sici)1097-458x(199606)34:6<424::aid-omr902>3.0.co
Autor:
Richard W. Hemingway, Fred L. Tobiason
Publikováno v:
Tetrahedron Letters. 35:2137-2140
A GMMXc conformational search routine gives a family of conformations that reflects the Boltzmann-averaged heterocyclic ring conformation as evidenced by accurate prediction of all three coupling constants observed for tetra-O-methyl-(+)-catechin.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68adc9176861df5d5df9dc83970aff74
https://doi.org/10.1016/s0040-4039(00)76779-7
https://doi.org/10.1016/s0040-4039(00)76779-7
Autor:
Michael J. Thielman, Fred L. Tobiason, Erich F. Paulus, Volker Böhmer, Helmut Goldmann, Walter Vogt
Publikováno v:
J. Chem. Soc., Perkin Trans. 2. :1769-1775
Single crystals of two macrocyclic compounds of the calix[4] arene type, in which two opposite para-positions are connected by an additional aliphatic chain where n= 5 (1a) or n= 7 (1c) respectively, were obtained from acetone without incorporation o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f500ef0a58d76a22b51a650b5fa77c58
https://doi.org/10.1039/p29900001769
https://doi.org/10.1039/p29900001769
Publikováno v:
Plant Polyphenols 2 ISBN: 9780306462184
Over the past 10 years, several scientific thrusts have come together in the study of flavanoids that make it possible to move forward into the study of complexation between polyphenols and polypeptides. Enhanced understanding of the conformational p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aff7d5de0715e9c62f78a282da9c4957
https://doi.org/10.1007/978-1-4615-4139-4_29
https://doi.org/10.1007/978-1-4615-4139-4_29
Autor:
Fred L. Tobiason, Gérard Vergoten
Publikováno v:
Biomolecular Structure and Dynamics ISBN: 9789401063074
This work discusses the use of vicinal 3JHH coupling constant equations as applied to flavan-3-ols and flexible monosaccarides. Prediction of vicinal coupling constants for (+)-catechin and D-glucitol are discussed using the GMMX searching methodolog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a377e60761f886c23c04884b9ab66b44
https://doi.org/10.1007/978-94-011-5484-0_8
https://doi.org/10.1007/978-94-011-5484-0_8
Autor:
Fred L. Tobiason
Publikováno v:
Plant Polyphenols ISBN: 9781461365402
The MNDO and AM1 molecular orbital methods and the molecular mechanics MMP method have been applied to the E and A conform-ers of the 3-OH flavanoids, (+)-catechin, (−)-epicatechin, 3-O-acetyl-(+)-catechin, and 3-O-acetyl-(−)-epicatechin. The gra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5711e8553f071a4d78a7fc114d2d48b0
https://doi.org/10.1007/978-1-4615-3476-1_26
https://doi.org/10.1007/978-1-4615-3476-1_26
Autor:
Fred L. Tobiason
Publikováno v:
Handbook of Adhesives ISBN: 9781461280194
Phenolic resins have played an important role in industrial advancement for over 80 years. The term phenolic is applied to those materials formed during the condensation reaction between phenol or substituted phenols and formaldehyde. Although Adolph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b300e79351b79e238db92c0ce7e2498
https://doi.org/10.1007/978-1-4613-0671-9_17
https://doi.org/10.1007/978-1-4613-0671-9_17
Autor:
Fred L. Tobiason
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 17:949-956
Rotational isomeric state chain configurational analysis has been applied to the p-cresol–form-aldehyde chain structure. Steric interference allows the chain to be considered by using a twofold potential energy barrier. The bond rotational angles a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f52c79380fcfe607d7855d25d976ee9
https://doi.org/10.1002/pol.1979.170170403
https://doi.org/10.1002/pol.1979.170170403