diterpene glycoside/悪性腫瘍

BACKGROUND Tinospora cordifolia is a miraculous ayurvedic herb used in the treatment of innumerable diseases such as diabetes, gonorrhea, secondary syphilis, anaemia, rheumatoid arthritis, dermatological diseases, cancer, gout, jaundice, asthma, leprosy, in the treatment of bone fractures, liver &

Steviol glycosides are currently being used as natural sweeteners by the food industry and Stevia rebaudiana has long been used as a sweet plant in South America for patients suffering from diabetes. In this study, a Stevia rebaudiana ethanolic extract (SREE) was prepared, analysed and tested for

To obtain diterpene glycosides from an aqueous extract of the aerial parts of Isodon henryi and further investigate their cytotoxicities, in this study, a total of seven compounds were isolated, including six ent-kaurane diterpene glycosides (1-6) and one diterpene

Three new diterpenoid hexose-glycosides, calyculaglycosides A-C (1-3) were isolated from the Caribbean gorgonian Eunicea sp. Calyculaglycosides A-C are rare diterpene glycosides possessing dilophol (4) aglycones related in biosynthetic origin to the elemene-type glycoside class of potent

A low concentration of differentiation inducers greatly enhances the in vitro and in vivo antiproliferative effects of interferon (IFN)alpha in several human cancer cells. Among the differentiation inducers tested, the sensitivity of cancer cells to IFNalpha was most strongly affected by cotylenin

Three new labdane-type diterpene glycosides, 15,18-di-O-β-d-glucopyranosyl-13(E)-ent-labda-7(8),13(14)-diene-3β,15,18-triol (1), 15,18-di-O-β-d-glucopyranosyl-13(E)-ent-labda-8(9),13(14)-diene-3β,15,18-triol (2), and

Pseudopterosins are a group of marine diterpene glycosides which possess an array of biological activities including anti-inflammatory effects. However, despite the striking in vivo anti-inflammatory potential, the underlying in vitro molecular mode of action remains elusive. To date, few studies

Stevioside is a diterpene glycoside found in the leaf of Stevia rebaudiana, a traditional oriental medicinal herb, which has been shown to have various biological and ethno-medicinal activities including antitumor activity. In this study, we investigated the effects of stevioside on the

In a continuing collaboration in a search for new antiproliferative compounds in Madagascar as part of an International Cooperative Biodiversity Group (ICBG), an ethanol extract of Molinaea retusa Radlk. (Sapindaceae) was investigated on the basis of its moderate antiproliferative activity against

From the nuts of Castanea mollissima Blume, a new kauranoid diterpene glycoside, named mollioside (1), was isolated. Its structure was established as (4R, 5S, 6R, 8R, 9S, 10S, 13R, 16R) 17-O-beta-D-glucopyranoside, ent-6,7-epoxy-6alpha-hydroxyl-6,7-secokaur-19-oic acid, 6, 19-lactone-16beta, 17-diol

Overexposure to solar ultraviolet (UV) radiation is the major cause of a variety of cutaneous disorders, including sunburn, photoaging, and skin cancers. UVB radiation (290-320 nm) causes multiple forms of DNA damage, p53 induction, protein and lipid oxidation, and the generation of harmful reactive

PTP1B deficiency in mouse mammary tumor virus (MMTV)-NeuNT transgenic mice inhibited the onset of MMTV-NeuNT-evoked breast cancer, while its overexpression was observed in breast cancer. Thus, PTP1B inhibitors are considered chemopreventative agents for breast cancer. As part of our program to find

Column chromatographic isolation of the MeOH extract of the seeds of Amomum xanthioides afforded a new diterpene glycoside, amoxanthoside A (1), two new monoterpene glycosides, (1 S,4 S,5 S)-5- EXO-hydroxycamphor 5-O-beta-D-glucopyranoside (2) and (1 R,4 R,5 S)-5-ENDO-hydroxycamphor

Labdane diterpene glycosides cathargyroside A and cathargyroside B, monoterpene glycosides vervenone-10-O-β-D-glucopyranoside and vervenone-10-O-β-D-apiofuranosyl-(1″→6')-β-D-glucopyranoside, as well as lignan glycosides cedrusinin-4-O-α-L-rhamnopyranoside and

A phytochemical investigation of the EtOH extract of the dry fronds of Microlepia pilosissima Ching afforded four new isopimarane diterpene glycosides, 3α-O-α-L-rhamnopyranosyl-7β-O-β-D-fucopyranosyl-ent-iospimara-8(14),15-diene (1),