Results 91 to 100 of about 18,396 (251)

The origin and evolution of Dolichoderinae, a dominant ant clade (Hymenoptera: Formicidae)

open access: yesSystematic Entomology, Volume 51, Issue 4, October‐December 2026.
The phylogeny of Dolichoderinae is inferred from phylogenomic data for the first time, based on 131 terminals representing all extant genera except Ecphorella, with divergence dating and time‐stratified historical biogeography. Novel phylogenetic relationships facilitate a new informal classification of genus groups, the erection of Paranillidris gen ...
Ziv E. Lieberman   +2 more
wiley   +1 more source

Sulfur-containing iridoid glucosides from Paederia scandens

open access: yes, 2006
A new sulfur-containing iridoid glucoside, named paederoside B, was isolated from the stems of Paederia scandens. The structure of the new compound was elucidated as paederosidyl paederosidate by spectral evidence. (c) 2006 Elsevier B.V.
Liu, X   +5 more
core  

Perbandingan Kadar Iridoid Total Ekstrak Air Daun dan Herba Plantago major L. Hasil Microwave Assisted Extraction [PDF]

open access: yes, 2011
Telah dilakukan penelitian untuk membandingkan kadar iridoid total ekstrak air herba dan daun Plantago major L. hasil Microwave Assisted Extraction (MAE). Kadar iridoid total ditetapkan secara spektrofotometri tampak (λmax = 597 nm), menggunakan pereaksi
Rahim, Abdul
core   +2 more sources

Agnuside Stabilizes the Complex I Assembly Factor NDUFAF6 to Reinforce Mitochondrial Efficiency and Thermogenic Responsiveness

open access: yesAdvanced Science, Volume 13, Issue 50, 7 September 2026.
ABSTRACT Brown and beige adipocytes dissipate energy as heat, yet effective strategies to enhance their mitochondrial efficiency remain limited. Here, we identify Agnuside (AGN) as a selective stabilizer of the complex I assembly factor NDUFAF6. AGN directly binds cytosolic NDUFAF6, suppresses its ubiquitination, prolongs its half‐life, and facilitates
Qingwen Zhao   +7 more
wiley   +1 more source

Iridoid blue-based pigments of Genipa americana L. (Rubiaceae) extract: Influence of pH and temperature on color stability and antioxidant capacity during in vitro simulated digestion.

open access: yesFood Chemistry, 2018
Iridoid blue-based pigments (IBBP) extract of Genipa americana L. represents a natural alternative additive for food applications and also exerts desirable biological effects on human health.
I. Neri-Numa   +4 more
semanticscholar   +1 more source

Two new iridoid glucosides from Picrorhiza scrophulariiflora

open access: yes, 2006
Two new iridoid glucosides with 3,4-dihydrocatalpol skeleton, piscrosides A (1) and B (2) together with nine known iridoid glucosides and three known cucurbitacin glucosides, were isolated from the stems of Picrorhiza scrophulariflora.
Nie, QJ   +5 more
core  

Generation of the Camptothecin Scaffold by a Flavin‐Catalyzed Photooxidative Skeletal Reorganization

open access: yesAngewandte Chemie, Volume 138, Issue 36, 1 September 2026.
The biosynthetic pathway of the anticancer drug precursor camptothecin involves an enigmatic skeletal reorganization from a 6/5/6 tetrahydro‐β‐carboline to a 6/6/5 pyrroloquinoline ring system. Here, we show that this transformation can be achieved by photooxidation with flavin cofactors, such as flavin mononucleotide (FMN) as catalysts.
Shenyu Liu   +6 more
wiley   +1 more source

Studies on iridoid-related compounds. IV Antitumor activity of iridoid aglycones.

open access: yesChemical and Pharmaceutical Bulletin, 1986
An extensive study has been made on the antitumor activity of several iridoid glycosides and their aglycones in mice bearing the experimental tumor leukemia P388. Most of the aglycones were found to be active. Among them, scadoside methyl ester aglycone (SMEH) showed the most potent activity, and it was furhter tested against several kinds of ...
ISHIGURO, KYOKO   +6 more
openaire   +3 more sources

Iridoid glycosides from Eucnide bartonioides.

open access: yes, 1997
Eucnide bartonioides (Loasaceae) yielded morroniside as the main iridoid constituent. In addition, six minor iridoid glucosides were isolated namely the known glucosides kingiside, sweroside, secologanol, 8-epi-loganin and loganin as well as a novel ...
Schripsema, Jan   +2 more
core   +1 more source

Iridoid Glycosides from Escallonia Species

open access: yes, 1993
Phytochemical study of Escallonia myrtoidea, E. illinita, E. alpina and E. pulverulenta led to the isolation of asperuloside and other C10-iridoid glycosides. From E.
Bravo, F.H.   +5 more
core  

Home - About - Disclaimer - Privacy