picea/抗癌藥

The antimicrobial properties of some traditional Carrier herbal preparations were evaluated using an agar dilution method. Pitch preparations were screened against known human pathogens: Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans and Aspergillus fumigatus. The

We have previously reported the isolation of nine phenolic compounds including three new flavonostilbenes, jezonocinols A, B, and C, from the MeOH extract of the bark of Picea jezoensis var. jezoensis. Further investigation of the MeOH extract led to the isolation of three new stilbene-type

Two new serratane-type triterpenoids, 1 and 2, were isolated from the stem bark of Picea jezoensis Carr. var. jezoensis (Pinaceae). Their structures were determined to be 3beta-methoxyserrat-13-en-21beta-ol (1) and 13beta, l4beta-epoxy-3beta-methoxyserratan-21beta-ol (2) on the basis of

The South American Simaba cuspidata Spruce and North Indian Ailanthus grandis Prain were investigated as sources of potentially useful antineoplastic agents. Both of these Simaroubaceae plant species were found to produce 6 alpha-tigloyloxychaparrinone (4a) and the new quassinoid 6

The potential for the extraction of the plant lignan hydroxymatairesinol (HMR) in large scale from Norway spruce (Picea abies) has given us the opportunity to study the metabolism and biological actions of HMR in animals. HMR, the most abundant single component of spruce lignans, was metabolized to

The antioxidant properties of hydroxymatairesinol (HM-3000) were studied in vitro in lipid peroxidation, superoxide and peroxyl radical scavenging, and LDL-oxidation models in comparison with the known synthetic antioxidants Trolox (a water-soluble vitamin E derivative), butylated hydroxyanisol

A novel rearranged labdane-type diterpenoid, 19(4-->3)abeo-8alpha, 13(S)-epoxylabda-4(18),14-diene (1), and two new abietane-type diterpenoids, 19-nor-abieta-4(18),8,11,13-tetraen-7-one (2) and 12-hydroxydehydroabietic acid (3) were isolated from the stem bark of Picea glehni, together with seven

Lignans are plant polyphenols which may possess anticancer, antioxidant, antimicrobial, anti-inflammatory and immunomodulatory activities. In particular, the lignan 7-hydroxymatairesinol (HMR/lignan, HMR) is a novel precursor of the mammalian lignan enterolactone (EL). In the present study, we

Essential oils are volatile compounds extracted from various plants by distillation, hydrodiffusion or compression. In recent years, the use of essential oils has gained popularity. Many pharmaceutical, cosmetic, sanitary, food industry and agriculture studies have revealed that essential oils exert

Seven serratane-type triterpenoids isolated from the cuticle of Picea jezoensis (Sieb. et Zucc.) Carr. jezoensis (Pinaceae) and the stem bark of Picea jezoensis (Sieb. et Zucc.) Carr. hondoensis (Mayer) Rehder (Pinaceae) were studied their possible inhibitory effects on Epstein-Barr virus early

To search for cancer chemopreventive agents from natural sources, 13alpha,14alpha-epoxy-21alpha-methoxyserratan-3-one, 21alpha-methoxyserrat-13-en-3-one, and 21alpha-hydroxy-3beta-methoxyserrat-14-en-30-al isolated from the cuticle of Picea jezoensis (Sieb. et Zucc.) Carr. var. jezoensis (Pinaceae)

Ultraviolet light is the major cause of skin cancers in human, and several effects of ultraviolet light B (UVB) are thought to contribute to skin photocarcinogenesis. 3Beta-methoxy-13alpha,14alpha-epoxyserratan-21beta-ol (PJJ-34; 1) isolated from Picea jezoensis Carr. var. jezoensis showed the

A novel serratane-type triterpenoid, 13alpha,14alpha-epoxy-3beta-methoxyserratan-21beta-ol (PJJ-34) derived from cuticles of Picea jezoensis Carr. var. jezoensis, has proved to be highly effective at suppressing carcinogenesis both in vitro and in vivo. To investigate possible anti-carcinogenic

3beta-Methoxyserrat-14-en-21beta-ol (1) and 3alpha-methoxyserrat-14-en-21beta-ol (2) are the most abundant triterpenoids from two Picea plants, Picea jezoensis (Sieb. et Zucc.) Carr. var. jezoensis and P. jezoensis (Sieb. et Zucc.) Carr. hondoensis (Mayr) Rehder, and the total yield of 1 and 2 reach

The chemopreventive effects of hydroxymatairesinol (HMR), a lignan extracted from Norway spruce (Picea abies), on the development of mammary carcinoma induced by 7,12-dimethylbenz[a]anthracene (DMBA) was studied in rats. HMR administered via diet in an average daily dose of 4.7 mg/kg body wt