Results 71 to 80 of about 97,347 (301)

Sesquiterpene lactone! a promising antioxidant, anticancer and moderate antinociceptive agent from Artemisia macrocephala jacquem

open access: yesBMC Complementary and Alternative Medicine, 2017
BackgroundSesquiterpene lactones (STLs) make a diverse and huge group of bio-active constituents that have been isolated from several plant families. However, the greatest numbers are present in Asteraceae family having more than 3000 different reported ...
M. Shoaib   +9 more
semanticscholar   +1 more source

Sesquiterpene Lactones from Vernonia nigritiana.

open access: yesNatural product communications, 2016
Two new sesquiterpenes, 8α-(4-hydroxymethacryloyl)-14-acetoxy-salonitenolide (1) and 8α-(2-hydroxymethyl 2-butenoyl)-14-acetoxy-salonitenolide (2), together with five known sesquiterpenes were isolated from the leaves of Vernonia nigritiana Oliv. & Hiern.
Esposito, Andrea   +4 more
openaire   +3 more sources

Ring Formation in Sesquiterpene Synthesis: Biomimetic vs. Non‐Biomimetic Strategies

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A short review of cyclase enzyme‐mediated ring formation in sesquiterpene biosynthesis is presented as a prelude to six case studies examining the merits and demerits of biomimetic vs. non‐biomimetic strategies for carbocyclisation in the total synthesis of this iconic natural product class.
Bohan Lin, Chen Dai, Alan C. Spivey
wiley   +1 more source

Dehydrocostus lactone, a naturally occurring polar auxin transport inhibitor, inhibits epicotyl growth by interacting with auxin in etiolated Pisum sativum seedlings

open access: yesActa Agrobotanica, 2019
We have isolated germacranolide-type sesquiterpene lactones with an α-methylene-γ-lactone moiety, dehydrocostus lactone (DHCL), costunolide, santamarine, and a novel compound denoted artabolide [3-hydroxy-4,6,7(H)-germacra-1(10),11(13)-dien-6,12-olide ...
Yuta Toda   +3 more
doaj   +1 more source

Sulfur Ylides in Skeletal‐Editing—Ring Expansion Reactions

open access: yesHelvetica Chimica Acta, EarlyView.
Sulfur ylides (S‐ylides) are emergent diazo surrogates that enable skeletal editing and ring expansion with safer handling and broad functional group tolerance. This perspective covers pioneer works and highlights recent advances in the field, while outlining key challenges and future directions that may redefine the role of S‐ylides in modern ...
Arsala Kamal   +3 more
wiley   +1 more source

Contact Allergy to Allergens in the Swedish Baseline Series Overrepresented in Diabetes Patients with Skin Reactions to Medical Devices – A Retrospective Study from Southern Sweden

open access: yesActa Dermato-Venereologica
Allergic contact dermatitis is reported among individuals using continuous glucose monitoring systems and insulin pumps. The aim of this study was to describe contact allergy patterns for allergens in the Swedish baseline series and medical device ...
Josefin Ulriksdotter   +5 more
doaj   +1 more source

Aromaticine, a sesquiterpene lactone from Amblyopappus pusillus

open access: yesActa Crystallographica Section E, 2008
Aromaticine (systematic name: 4a,8-dimethyl-3-methylene-3,3a,4,4a,7a,8,9,9a-octahydroazuleno[6,5-b]furan-2,5-dione), C15H18O3, is a natural lactone isolated from Amblyopappus pusillus.
Matías López-Rodríguez   +3 more
doaj   +1 more source

A metabolomic approach to target compounds from the asteraceae family for dual COX and LOX inhibition [PDF]

open access: yes, 2015
The application of metabolomics in phytochemical analysis is an innovative strategy for targeting active compounds from a complex plant extract. Species of the Asteraceae family are well-known to exhibit potent anti-inflammatory (AI) activity.
Chagas-Paula, Daniela A.   +3 more
core   +2 more sources

Comprehensive Insights into Natural Bioactive Compounds: From Chemical Diversity and Mechanisms to Biotechnological Innovations and Applications

open access: yesChemistryOpen, EarlyView.
Natural products derived from plants, animals, fungi, bacteria, and minerals contain diverse bioactive classes such as alkaloids, flavonoids, terpenoids, saponins, tannins, and phenolics. These natural products work through different mechanisms, including ROS inhibition, NF‐κB suppression, and cytokine regulation, and exhibit wide applications across ...
Sajid Ali   +4 more
wiley   +1 more source

Sesquiterpene lactones derived from Saussurea lappa induce apoptosis and inhibit invasion and migration in neuroblastoma cells

open access: yesJournal of Pharmacological Sciences, 2015
Neuroblastoma is among the most fatal of solid tumors in the pediatric age group, even when treated aggressively. Therefore, a new effective therapeutic drug(s) for neuroblastoma is urgently needed.
Keiichi Tabata   +5 more
doaj   +1 more source

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