Cycloartane-type triterpenoids from Combretum quadrangulare Kurz with PCSK9 secretion inhibitory activities.

Nine previously undescribed (1-9) and seven known (10-16) cycloartane-type triterpenoids were isolated and characterized from Combretum quadrangulare Kurz using physicochemical and spectroscopic methods. The absolute configurations of these compounds were determined through modified Mosher's method and quantum chemical calculation of electronic circular dichroism (ECD) and vibrational circular dichroism (VCD) spectra. Their inhibitory activities against PCSK9 secretion were assessed, and a plausible structure-activity relationship was delineated.

Chemical Composition, Antimicrobial, Nitric Oxide Inhibition and Cytotoxic Activity of Essential Oils from Zanthoxylum acanthopodium DC. Leaves and Stems from Vietnam.

This study was aimed to investigate the chemical composition and biological activities of leaf and stem essential oils of Zanthoxylum acanthopodium DC. from Vietnam. Their chemical composition was analyzed by GC/MS.

Chemical composition, anti-inflammatory and cytotoxic activity of essential oils from two species ( and ) from Vietnam.

New essential oils (EOs) extracted from different parts of two species ( and ) from Vietnam were investigated for their chemical composition, anti-inflammatory and cytotoxic activity. Sixty-nine total compounds were identified in the EOs by GC/MS. The major constituent of the leaf, fruit, and root EOs from was β-caryophyllene (71.

Antiphotoaging and Skin-Protective Activities of Ethanol Extract in Human Keratinocytes.

is a traditional medicinal herb used in Vietnam and several other countries. However, the skin-protective properties of ethanol extract (As-EE) have not been evaluated. Human keratinocytes form the outermost barrier of the skin and are the main target of ultraviolet (UV) radiation.

Inhibitory Effects of Juss. on IgE-Mediated Allergic Reaction and DNCB-Induced Atopic Dermatitis.

Juss. is a deciduous shrub that mainly grows in Asia. Despite studies of other species for treatment of various diseases, Juss.

(Sect. Archecamellia - Theaceae), a new species from Vietnam.

A new species of Theaceae, N.S. Lý, V.

(Fagaceae), a new species from Lam Dong Province, Vietnam.

Ngoc & L. V. Dung, a new species from the Central highland of Vietnam, is described and illustrated.