โ Scribed by G.P. van der Kelen; Z. Eeckhaut
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Assignments of the 13C NMR signals of a series of bridged-ring steroids incorporating a bicyclo[2.2.l]heptane system into ring A or B have been made on the basis of comparisons of their spectra with those of related unbridged steroids and bicyclo[2.2.l]heptane derivatives. \* Part IV in the series B
## Abstract A ^13^C magnetic resonance investigation of 22 compounds of the general formula O๏ฃพC^1^(R^1^)C^2^(R^2^)๏ฃพC^3^(R^3^) NR^4^R^4โฒ^ has been carried out in order to confirm the conformational assignments estimated previously by PMR and IR spectroscopy. The effects of nonplanarity and hindered
## Abstract The role of steric factors in magnetic nonโequivalence anisochronism of complex geminal groups and of their fragments in compounds of the general formula RCH(Ph)CH(COORโฒ)~2~ has been investigated. CMR anisochronism is more sensitive to conformational and other steric changes than is PMR