As a part of an ongoing search for bioactive constituents from Korean medicinal plants, the phytochemical
investigations of the twigs of Salix glandulosa afforded 12 new phenolic glycosides (1−12) and a known analogue (13). The
structures of 1−13 were characterized by a combination of NMR methods (1
H and 13C NMR, 1
H−1
H COSY, HMQC, and
HMBC), chemical hydrolysis, and GC/MS. The absolute configuration of 13 [(1R,2S)-2-hydroxycyclohexyl-2′-O-trans-pcoumaroyl-β-D-glucopyranoside]
was determined for the first time. Compounds 1−3, 6, and 7 exhibited inhibitory effects on
nitric oxide production in lipopolysaccharide-activated murine microglial cells (IC50 values in the range 6.6−20.5 μM).