Results 151 to 160 of about 3,128 (180)

Angelicoidenol, a bicyclic monoterpene from the seeds of Pleurospermum angelicoides

Phytochemistry, 1983
Abstract From the methanol extract of the defatted seeds of Pleurospermum angelicoides, a new bicyclic monoterpene has been isolated which was characterized by spectral data and chemical reactions.
Umar Mahmood, Sheo B. Singh, Raghunath S. Thakur   +2 more
openaire   +1 more source

A Bicyclic Monoterpene Diol and UVB Stimulate BRCA1 Phosphorylation in Human Keratinocytes¶

Photochemistry and Photobiology, 2003
BRCA1 (breast cancer-associated gene 1) is a tumor suppressor gene that plays a role in DNA repair when phosphorylated. Many DNA-damaging agents including UVC and hydrogen peroxide have been shown to induce phosphorylation of BRCA1. Results of this study now show that both UVB and a bicyclic monoterpene diol (BMT diol) result in phosphorylation of ...
Matthew T, Canning, David A, Brown, Daniel B, Yarosh   +2 more
openaire   +2 more sources

Acaricidal activities of bicyclic monoterpene ketones from Artemisia iwayomogi against Dermatophagoides spp.

Experimental and Applied Acarology, 2013
The acaricidal properties of 1,7,7-trimethylbicyclo[2.2.1]heptan-2-one isolated from Artemisia iwayomogi and its structural analogues were evaluated against Dermatophagoides farinae and D. pteronyssinus, and their effects were compared with that of the commercial acaricide benzyl benzoate. Based on the 50 % lethal dose (LD50) values against D. farinae,
Ju-Hyun, Jeon, Min-Gi, Kim, Hoi-Seon, Lee   +2 more
openaire   +2 more sources

Synthesis of Fragrance Compounds from Biorenewables: Tandem Hydroformylation–Acetalization of Bicyclic Monoterpenes

ChemCatChem, 2013
AbstractThe Rhodium‐catalyzed tandem hydroformylation–acetalization of the terpenes 3‐carene, 2‐carene, α‐pinene, and β‐pinene was studied in ethanol solutions in the presence of PPh3 or tris(O‐tert‐butylphenyl)phosphate, P(O‐o‐tBuPh)3, ligands. All these terpenes are constituents of turpentine oils obtained commercially from coniferous trees. β‐Pinene
Marina C. de Freitas, Camila G. Vieira, Eduardo N. dos Santos, Elena V. Gusevskaya   +3 more
openaire   +1 more source

Reaction of 4‐phenyl‐1,2,4‐triazoline‐3,5‐dione (PTAD) with bicyclic monoterpenes

Chemische Berichte, 1982
AbstractThe cycloaddition of the bicyclic monoterpenes camphene (4), α‐pinene (5), β‐pinene (6), 2‐carene (7), bornene (8), and tricyclane 9 with PTAD was investigated. Only camphene and α‐pinene gave rearranged urazoles (11, 14) via dipolar cycloaddition. Ene‐reaction was the predominant reaction course for α‐pinene (→15) and the exclusive route for β‐
Waldemar Adam, Ottorino De Lucchi, Karlheinz Hill   +2 more
openaire   +1 more source

Micellar effects on the kinetics and mechanism of ceric ammonium nitrate oxidation of bicyclic monoterpenes under acid free conditions

Chemical Data Collections, 2021
Abstract Ceric ammonium nitrate (CAN) oxidation of bicyclic monoterpenes (BMT) such as borneol (BORN), isoborneol (IBORN) and camphor (CAMP) in aqueous acetonitrile medium did not proceed even under reflux conditions and mineral acid-free conditions.
Rajitha Nampally, Shylaja Somannagari, Chinna Rajanna Kamatala, Yadagiri Bhongiri, Umesh Kumar Utkoor   +4 more
openaire   +1 more source

Vicinal ¹³C¹³C coupling constants in bicyclic monoterpenes

Magnetic Resonance in Chemistry, 1992
AbstractCarbon–carbon coupling constants in monoterpene hydrocarbons (3‐carene, α‐pinene and camphene) were investigated. A selective version of the INADEQUATE experiment was used for measurements of the long‐range nJ(CC) values. The dependence of the vicinal 13C13C coupling constants on the dihedral angles and the types of molecular framework ...
Aleksej Y U. Denisov, Aleksej V. Tkachev, Viktor I. Mamatyuk   +2 more
openaire   +1 more source

Stereoselective epoxidation of bicyclic monoterpenes with tert-amyl hydroperoxide in presence of molybdenum compounds

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1974
The epoxidation of theα- andβ-pinenes and Δ3- and Δ4-carenes with tert-amyl hydroperoxide in the presence of molybdenum compounds proceeds stereospecifically with the formation of oxides that correspond to attack of the reagent from the sterically less shielded side.
V. P. Yur'ev, I. A. Gailyunas, Z. G. Isaeva, G. A. Tolstikov   +3 more
openaire   +1 more source

Enantioselectivity in the biotransformation of bicyclic monoterpene alcohols with the cultured suspension cells of Nicotiana tabacum

Plant Cell Reports, 1983
The enantiomeric pairs of borneol, isoborneol, and isopinocampheol were incubated with the cultured suspension cells of Nicotiana tabacum. One of each enantiomeric pair was preferentially transformed to the corresponding carbonyl compound. It was thus demonstrated that the cultured cells have the ability to discriminate between the enantiomers of the ...
T, Suga, T, Hirata, H, Hamada, M, Futatsugi   +3 more
openaire   +2 more sources

Attenuation of CFA-induced chronic inflammation by a bicyclic monoterpene fenchone targeting inducible nitric oxide, prostaglandins, C-reactive protein and urea

Inflammopharmacology, 2023
Fenchone (a bicyclic monoterpene) is present in the essential oils of plant species like Foeniculum vulgare and Peumus boldus and is used to treat GIT disorders. Research reports have indicated its strong anti-inflammatory, antioxidant, and anti-nociceptive properties. The present study was designed to investigate fenchone's anti-arthritic effects in a
Shoaib Nawaz, Hafiz Muhammad Irfan, null Alamgeer, Laiba Arshad, Shah Jahan   +4 more
openaire   +2 more sources