Anti-inflammatory properties of red ginger (Zingiber officinale var. Rubra) extract and suppression of nitric oxide production by its constituents.

Red ginger (Zingiber officinale var. Rubra) has been prescribed as an analgesic for arthritis pain in Indonesian traditional medicine. The surface color of the rhizome is purple because of the anthocyanidins in its peel.

Formation of diazoate intermediate upon nitrous acid and nitric oxide treatment of 2'-deoxyadenosine.

When 2'-deoxyadenosine was treated with HNO(2) or NO, a small amount of a previously unidentified product was formed. The product was also formed by the reaction of 2'-deoxyadenosine with isoamyl nitrite in tetrahydrofuran as a major product. The product was identified as a diazoate derivative of 2'-deoxyadenosine, a reaction intermediate.

Phloroglucinol diglycosides accompanying hydrolyzable tannins from Kunzea ambigua.

Six phloroglucinol diglucosides-kunzeaphlogins A-F (1-6) and a hydrolyzable tannin, kunzeatannin A (7)-were isolated along with 10 known polyphenols from the leaf extract of Kunzea ambigua. Structural elucidation of these compounds was based on spectroscopic analyses and chemical properties.

Urinary excretion of anthocyanins in humans after cranberry juice ingestion.

Cranberry, which is rich in polyphenols, including anthocyanins and proanthocyanidins, has been found to have various effects beneficial to human health, including prevention of urinary tract infections. These effects have been associated with polyphenols in the fruit. We investigated the excretion of anthocyanins in human urine after ingestion of cranberry juice.

Anti type I allergic property of Japanese butterbur extract and its mast cell degranulation inhibitory ingredients.

Pollenosis is a disease that affects 1 in 10 of the Japanese population. During the season of cedar pollen dispersal, many patients suffer from symptoms such as sniffling, sternutation, and itching of the eyes. Japanese butterbur is a popular vegetable and is one of the few domestic vegetables in Japan.

Cypellogins A, B and C, acylated flavonol glycosides from Eucalyptus cypellocarpa.

Three new acylated flavonol glycosides, cypellogins A (1), B (2) and C (3), along with eight known phenolic compounds, were isolated from the dried leaves of Eucalyptus cypellocarpa, and their structures were elucidated using spectroscopic methods, including 2D NMR experiments and chemical evidence.

Carnosic acid, a new class of lipid absorption inhibitor from sage.

The methanolic extract from the leaves of Salvia officinalis L. (sage) showed significant inhibitory effect on serum triglyceride elevation in olive oil-loaded mice (500 and 1000 mg/kg, p.o.

Dimeric flavonol glycoside and galloylated C-glucosylchromones from Kunzea ambigua.

A novel dimeric flavonol glycoside linked through a methylene group, kunzeagin A (1), and six new chromone C-glucosides, kunzeachromones A-F (2-7), were isolated along with seven known compounds from the leaf extract of Kunzea ambigua. The structures of these compounds were elucidated on the basis of spectroscopic analyses and chemical properties. Kunzeachromones A-F provided additional examples of galloylated C-glucosidic chromones occurring in the Myrtaceae.