Abstract Molecular triads, B‐A‐B, in which the central unit A is aromatic or heteroaromatic,
can exist as syn or anti conformers or atropisomers of correspondingly C or S shape. These …

Stereumins H (1), I (2), and J (3), three sesquiterpenes possessing a novel stereumane-type
backbone, were isolated from an extract of culture broth of the Basidiomycete Stereum sp …

When a benzene ring bears two 2-methyl-1-naphthyl moieties in the para, meta or ortho
positions as in 1, 4-bis (2-methyl-1-naphthyl) benzene,, 1, 3-bis (2-methyl-1-naphthyl) …

The six-membered cyclic polysilanes (ie, the analogues of cyclohexane having six silicon
atoms replacing the six carbon atoms) are expected to exhibit chair conformations that are …

The control of conformation, which until quite recently was feasible only in cyclic
compounds, now appears to be a realistic target for stereoselective synthesis [1–3] …

The crystal structure of 1, 3, 5-tris (4-methylnaphth-1-yl) benzene, 1, shows one naphthyl
substituent in an anti relationship to the other two. On the other hand, low temperature (− 70° …

Two pyridoxine derivatives containing a dinitrophenyl moiety were investigated by 1H NMR
spectroscopy. Conformational dynamics in solution were studied for each compound using …

The low-temperature NMR spectra of 1, 4-bis (mesitoyl) durene, 1, and of 1, 4-bis
(mesitylethenyl) durene, 2, reveal the presence of syn and anti rotamers at the equilibrium …

The 1H NMR solution spectra of the title compounds display anisochronous lines for the o-
methyl substituents below− 170° C, due to the existence of two propeller-like M and P …

1, 4-Diacylnaphthalenes, bearing methyl groups in positions 2 and 3, display, at appropriate
temperatures, NMR spectra due to meso and racemic stereolabile diastereoisomers …