Results 51 to 60 of about 28,180 (235)

The Total Synthesis of (–)-Scabrolide A [PDF]

open access: yes, 2020
The first total synthesis of the norcembranoid diterpenoid scabrolide A is disclosed. The route begins with the synthesis of two chiral pool-derived fragments, which undergo a convergent coupling to expediently introduce all 19 carbon atoms of the ...
Hafeman, Nicholas J.   +5 more
core  

Biotransformation of ent-beyerenes with mucor plumbeus [PDF]

open access: yes, 2013
Indexación: Web of Science; Scielo.ABSTRACT The microbiological transformation of ent-beyer-15-en-18-ol 1 and ent-beyer-15-en-19-ol 2, using Mucorplumbeus, resulted in hydroxylated products.
Chamy, María Cristina   +3 more
core   +1 more source

Andrographolide Modulates Fibrogenic and Oxidative Stress Responses in Human Lung Fibroblasts

open access: yesThe Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT Pulmonary fibrosis is a progressive lung disorder characterized by fibroblast activation and excessive extracellular matrix deposition. Andrographolide (ANDRO) has been reported to attenuate pulmonary fibrosis, but the underlying molecular mechanisms remain incompletely understood.
Yu‐Hsin Tseng   +8 more
wiley   +1 more source

Secondary Metabolites with Antimycobacterial Activities from One Actinobacteria: Herbidospora yilanensis

open access: yesMolecules, 2021
The cultivation of one actinobacteria strain, Herbidospora yilanensis, was isolated from sediment samples collected from Yilan County City in Taiwan, resulting in the isolation of five previously undescribed compounds: herbidosporayilanensins A–E (1–5 ...
Ming-Jen Cheng   +4 more
doaj   +1 more source

Enantioselective Total Synthesis of (+)-Salvileucalin B [PDF]

open access: yes, 2011
An enantioselective total synthesis of the diterpenoid natural product (+)-salvileucalin B is reported. Key findings include a copper-catalyzed arene cyclopropanation reaction to provide the unusual norcaradiene core and a reversible retro ...
Levin, Sergiy   +2 more
core   +1 more source

Combining Metabolomics and Transcriptomics to Characterize Tanshinone Biosynthesis in Salvia Miltiorrhiza [PDF]

open access: yes, 2014
Plant natural products have been co-opted for millennia by humans for various uses such as flavor, fragrances, and medicines. These compounds often are only produced in relatively low amounts and are difficult to chemically synthesize, limiting access ...
Cui, Guanghong   +12 more
core   +3 more sources

Alcoholic extracts of Russian sage (Salvia yangii) contain bioactive terpenoids with inhibitory activity against grapevine downy mildew (Plasmopara viticola)

open access: yesPest Management Science, EarlyView.
Alcoholic extracts from flowers, leaves, and shoots of Russian sage decreased downy mildew severity on grapevine leaf disks. Fractionation followed by metabolomic analysis revealed putative terpenoids as the main components of the active fractions. Specifically, 7‐methylrosmanol, 12‐O‐methylcarnosic acid, carnosic acid, and carnosol were identified as ...
Anna Smaldone   +5 more
wiley   +1 more source

Flexibilins A–C, New Cembrane-Type Diterpenoids from the Formosan Soft Coral, Sinularia flexibilis

open access: yesMarine Drugs, 2013
Three new cembrane-type diterpenoids, flexibilins A–C (1–3), along with a known cembrane, (−)-sandensolide (4), were isolated from the soft coral, Sinularia flexibilis. The structures of cembranes 1–4 were elucidated by spectroscopic methods.
Ping-Jyun Sung   +11 more
doaj   +1 more source

Comparative Transcriptomics and Metabolites Analysis of Two Closely Related Euphorbia Species Reveal Environmental Adaptation Mechanism and Active Ingredients Difference

open access: yesFrontiers in Plant Science, 2022
Roots of Euphorbia fischeriana and Euphorbia ebracteolata are recorded as the source plant of traditional Chinese medicine “Langdu,” containing active ingredients with anticancer and anti-AIDS activity.
Han Zheng   +13 more
doaj   +1 more source

Therapeutic potential of natural products in cancer immunotherapy: Advances and challenges

open access: yesBritish Journal of Pharmacology, EarlyView.
This review systematically outlines the mechanisms underlying tumour immunotherapy resistance and elucidates the role of natural products in enhancing therapeutic efficacy as immunomodulatory adjuvants. Abstract Immunotherapy has emerged as a clinically pivotal approach in cancer treatment, but its application remains limited to a small subset of ...
Rao Hu   +6 more
wiley   +1 more source

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