T. Moriguchi et al., Conformational and intramolecular hydrogen-bonding properties of substituted dithia[3.3]metacyclophanes, CHEM LETT, (2), 1999, pp. 167-168
Conformational properties and intramolecular hydrogen-bondings of dithia[3.
3]metacyclophanes carrying one or two amino group on their internal positio
ns were studied by H-1-NMR, IR spectra and X-ray structural analyses. It wa
s found out that intramolecular hydrogen-bonding network between amino prot
eins and bridge sulfur atoms is formed and it is closely related to the con
formations of cyclophanes.