Sinomenine is a tetracyclic alkaloid that is extracted from the traditional Chinese medicine
sinomenium acutum. It has been reported to possess low cytotoxicity and a variety of …

An intramolecular Stetter reaction of vinylphosphine oxides and vinylphosphonates has
been developed. Treatment of an aldehyde with a nucleophilic N-heterocyclic carbene …

Our previous study found that [6]-shogaol, a major bioactive component in ginger, is
extensively metabolized in cancer cells and in mice. It is unclear whether these metabolites …

Dihydro-β-erythroidine (DHβE) is a member of the Erythrina family of alkaloids and a potent
competitive antagonist of the α4β2-subtype of the nicotinic acetylcholine receptors …

The long-range (4JHH) coupling constants of 28 compounds, cyclopentane and
cyclohexane derivatives, have been analyzed by means of principal component analysis …

Detailed measurements of long‐range heteronuclear spin–spin coupling constants,
especially 2, 3JCH spin–spin couplings for various cyclopentane derivatives, are reported …

In this paper we describe the peculiar properties of a polycyclic compound (2), derived from
a Diels–Alder adduct, which undergoes spontaneous cyclization to 3 when kept in …

Here we report the detailed measurement of long‐range heteronuclear spin–spin coupling
constants, especially 2, 3JCH spin–spin couplings for eight different cyclopentane …

The 2, 3JCH dependence on dihedral angle (θ H C C X) for cyclopentane derivatives
was investigated. We observed that the combined use of experimentally obtained 2, 3JCH …

Detailed assignments of 1H and 13C NMR spectral data for 14 cyclopentane derivatives are
reported. The assignments are based on 1D 1H and 13C NMR and on 2D shift‐correlated …