Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Ribonucleoside derivatives conformation

The syn and anti conformations of pyrimidine ribonucleosides have an opposite sign for certain transitions (e.g., the B2u transition) (67B843 69JA831 71JA(93)1600 72JCP2736 72MI3). Such relations are empirical correlations, since the molecular structures are too complicated to allow theoretical calculations of the rotational strengths. A combination of DNMR, CD spectroscopy, and molecular mechanics calculations has been applied to derivatives of indole 77 and thiazoline-2-thione 78 substituted by chiral rotors (Scheme 58). In these molecules the rotor adopts one of the bisected... [Pg.229]

See other pages where Ribonucleoside derivatives conformation is mentioned: [Pg.150]    [Pg.357]    [Pg.187]    [Pg.233]    [Pg.287]    [Pg.255]    [Pg.264]    [Pg.328]    [Pg.199]    [Pg.186]    [Pg.178]    [Pg.226]    [Pg.1924]    [Pg.178]   
See also in sourсe #XX -- [ Pg.38 ]



SEARCH



Conformational derivatives

Ribonucleoside

Ribonucleosides

© 2024 chempedia.info