Results 51 to 60 of about 27,748 (223)

Caesalpinbondin A, a Novel Diterpenoid Lactone With an Unprecedented Carbon Skeleton from the Seeds of Caesalpinia bonduc

open access: yesFrontiers in Chemistry, 2022
Graphical ...
Dong-Qing Fei   +11 more
doaj   +1 more source

Diterpene Synthases and Their Responsible Cyclic Natural Products [PDF]

open access: yes, 2014
This review provides an overview of diterpene synthases which were initially identified via genetic and/or biochemical means, traversing all organisms researched to ...
Hai-Yan Gong, Xiao-Ya Chen, Ying Zeng
core   +1 more source

New Sesquiterpenoids and a Diterpenoid from Alpinia oxyphylla

open access: yesMolecules, 2015
The new compounds 2-methyl-6-isopropyl-7-hydroxymethyl naphthalene (1), oxyphyllenone H (2), epi-oxyphyllenone (6), (E)-labda-12,14-dien-15(16)-olide-17-oic acid (3), and two new natural products 4 and 5 were isolated from the ethyl acetate part of 95 ...
Lei Hou   +6 more
doaj   +1 more source

Diterpenoids from the aerial parts of Isodon macrocalyx

open access: yesGuangxi Zhiwu, 2023
To study the constituents of Isodon macrocalyx, thirteen diterpenoids were isolated and purified from the aerial parts of I. macrocalyx by means of various column chromatographic techniques, including silica gel, ODS, Sephadex LH-20 and RP-C18 pre-HPLC ...
Yanling CHANG   +6 more
doaj   +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

Amber imitation? Two unusual cases of Pinus resin-coated beads in Iberian Late Prehistory (3rd and 2nd millennia BC) [PDF]

open access: yes, 2019
A group of beads from the artificial cave of La Molina (Lora de Estepa, Sevilla) and Cova del Gegant (Sitges, Barcelona) were made from a biogenic raw material and intentionally covered by a layer of resin.
Avilés Escaño, Miguel Ángel   +5 more
core   +2 more sources

Functional characterization and structural bases of two class I diterpene synthases in pimarane-type diterpene biosynthesis

open access: yesCommunications Chemistry, 2021
Pimaranes are diterpenoid natural products with poorly characterised biosynthetic pathways. Here pimaranetype diterpenoid synthases are functionally and structurally characterised and shown to exploit distinct modes of intermediate stabilisation.
Baiying Xing   +14 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

Bioactive Compounds From Torbangun [Plectranthus Amboinicus (Lour.) Spreng] Chloroform Fraction Induce Apoptosis in Breast Cancer (Mcf-7 Cells) in Vitro [PDF]

open access: yes, 2017
Torbangun (Plectranthus amboinicus (Lour.) Spreng) is a medicinal plant that has been traditionally used in tropical countries to cure various illnesses.
Andarwulan, N. (Nuri)   +3 more
core  

Autotrophic and Heterotrophic Growth Conditions Modify Biomolecole Production in the Microalga Galdieria sulphuraria (Cyanidiophyceae, Rhodophyta) [PDF]

open access: yes, 2020
Algae have multiple similarities with fungi, with both belonging to the Thallophyte, a polyphyletic group of non-mobile organisms grouped together on the basis of similar characteristics, but not sharing a common ancestor.
Barone, R.   +13 more
core   +1 more source

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