Results 31 to 40 of about 31,846 (218)
Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. [PDF]
, 2016 The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the
Kärkäs, Markus D. +2 more
core +2 more sources
Levels of cafestol, kahweol, and related diterpenoids in wild species of the coffee plant coffea [PDF]
, 1997 Specific fatty acids and sterols in food composites from seven countries were analyzed. In the 1960s, groups of 8 to 49 men from 16 cohorts, ages 40–59 years and living in the United States, Finland, the Netherlands, Italy, Greece, the former Yugoslavia,
Bovenkamp, P. van de +5 more
core +9 more sources
Diterpenes from the Brown Alga Dictyota crenulata
Molecules, 2008 The crude extract of the Brazilian brown alga Dictyota crenulata was analyzed by NMR spectroscopy and HRGC-MS techniques. Seven diterpenes were identified: pachydictyol A, dictyodial, 4β-hydroxydictyodial A, 4β-acetoxydictyodial A, isopachydictyol ...
Valéria Laneuville Teixeira +4 more
doaj +1 more source
The Remarkable Structural Diversity Achieved in ent-Kaurane Diterpenes by Fungal Biotransformations
Molecules, 2014 The use of biotransformations in organic chemistry is widespread, with highlights of interesting applications in the functionalization of natural products containing unactivated carbons, like the kaurane diterpenes.
Jacqueline A. Takahashi +4 more
doaj +1 more source
Molecules, 2022 Steroid 5α-reductase plays a crucial role in catalyzing the conversion of testosterone to dihydrotestosterone, which is involved in many androgen-dependent disorders. Leaf-hexane extract from Tectona grandis L.f.
Kamonlak Insumrong +6 more
doaj +1 more source
Diterpenes fromSideritis Trojana
Natural Product Letters, 2002 Six known ent-kaurene, a new ent-kaurane and a new pimarane diterpenes were isolated from Sideritis trojana. The structures of new compounds were determined as ent-7alpha-15beta,16beta-epoxykaurane (1), and ent-2alpha-hydroxy-8(14),15-pimaradiene (2) along with the known compounds siderol (3), sideridiol (4), 7-epicandicandiol (5), isocandol B (6 ...
Topçu, Gülaçtı +4 more
openaire +5 more sources
Spongionella secondary metabolites protect mitochondrial function in cortical neurons against oxidative stress [PDF]
, 2014 Accepted: 8 January 2014 This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Acknowledgments
Alfonso, Amparo +9 more
core +4 more sources
Reactivity of (3-Methylpentadienyl)iron(1+) Cation: Late-stage Introduction of a (3-Methyl-2Z,4-pentadien-1-yl) Side Chain [PDF]
, 2016 The 3-methyl-2Z,4-pentadien-1-yl sidechain is found in various sesquiterpenes and diterpenes. A route for the late stage introduction of this functionality was developed which relies on nucleophilic attack on the (3-methylpentadienyl)iron(1+) cation ...
Chaudhury, Subhabrata +2 more
core +3 more sources
Grasas y Aceites, 2021 This research reports a comprehensive characterization of the composition profile and physical and chemical characteristics of roasted Arabica coffee oil obtained by mechanical pressing.
B.R. Böger +3 more
doaj +1 more source
Marine Drugs, 2019 Marine resources are considered as a very promising source of bioactive molecules, and macroalgae in particular have gained special attention, due to their structurally diverse composition.
Adriana C.S. Pais +4 more
doaj +1 more source