From the stems of Liriodendron tulipifera, seventeen known compounds have been
extracted, isolated and purified. By using spectroscopic analysis, the structures of these pure …

Tyrosinase inhibitors improve skin whitening by inhibiting the formation of melanin
precursors in the skin. The inhibitory activity of seven phlorotannins (1–7), triphlorethol A (1) …

We recently found that treatment of normal human melanocytes (NHMs) with the antioxidant
astaxanthin (AX) suppresses the stem cell factor (SCF)-stimulated protein expression levels …

Human skin protects the body from mechanical and chemical damages, and skin wound
healing is a costly procedure and worldwide issue. A Zingiber officinale compound, 6 …

Six new azo dyes containing of 5 (4H)-oxazolone ring were prepared by diazotization of 4-
aminohippuric acid and coupling with N, N-dimethylaniline, 1-naphthol and 2-naphthol and …

Claisen–Schmidt condensation of 3-formyl-9-methylcarbazole with various amides of 3-
aminoacetophenone afforded N-{3-[3-(9-methyl-9H-carbazol-3-yl)-acryloyl]-phenyl} …

Inhibition of acetylcholinesterase (AChE) is a promising strategy for the management of
Alzheimer's disease (AD). Prolyl endopeptidase (PEP) is a post-proline cleaving enzyme …

Synthesis and biological evaluation of unsymmetrical curcumin analogues (UCAs) have
been achieved. Tyrosinase inhibitory activities were found for most of the prepared synthetic …

Four known compounds have been isolated from the stems of Liriodendron tulipifera, and
the structures of these pure constituents were determined using spectroscopic analysis …

Three new butanolides, isophilippinolide A, philippinolide A, and philippinolide B, and an
amide, cinnaretamine, were isolated from the roots of Cinnamomum philippinense to be …