Results 21 to 30 of about 2,296 (262)

Silacyclohexanes, Sila(hetero)cyclohexanes and Related Compounds: Structure and Conformational Analysis

Molecules, 2020
Conformational analysis of Si-mono- and Si,Si-disubstituted silacyclohexanes as well as their analogues with a heteroatom(s) in the ring is reviewed with the focus on the recent results.
Bagrat A. Shainyan
doaj   +1 more source

Anti-Austerity Activity of Thai Medicinal Plants: Chemical Constituents and Anti-Pancreatic Cancer Activities of Kaempferia parviflora

Plants, 2021
Human pancreatic tumor cells have an intrinsic ability to tolerate nutrition starvation and survive in the hypovascular tumor microenvironment, the phenomenon termed as “austerity”.
Sijia Sun, Min Jo Kim, Dya Fita Dibwe, Ashraf M. Omar, Sirivan Athikomkulchai, Ampai Phrutivorapongkul, Takuya Okada, Kiyoshi Tsuge, Naoki Toyooka, Suresh Awale   +9 more
doaj   +1 more source

A BRIEF OVERVIEW OF SPECTROSCOPIC STUDIES OF CYCLOHEXANE AND ITS DERIVATIVES [PDF]

Vestnik Issyk-Kulʹskogo universiteta
This paper presents the results of comprehensive research on the structure of condensed phases of monosubstituted cyclohexanes and the dynamics of their rearrangement under the influence of thermal motion.
Artikov A.
doaj   +1 more source

Volatile hydrocarbons from endophytic fungi and their efficacy in fuel production and disease control

Egyptian Journal of Biological Pest Control, 2018
Endophytic fungi are the microorganisms which asymptomatically colonize internal tissues of plant roots and shoots. Endophytes produce a broad spectrum of odorous compounds with different physicochemical and biological properties that make them useful in
B. Shankar Naik
doaj   +1 more source

Catalytic asymmetric synthesis of cyclohexanes by hydrogen borrowing annulations

, 2019
Hydrogen borrowing catalysis serves as a powerful alternative to enolate alkylation, enabling the direct coupling of ketones with unactivated alcohols.
Young, TA, Wasim M. Akhtar, Donohoe, Timothy, Akhtar, Wasim M., Donohoe, T, Fernanda Duarte, Armstrong, RJ, Duarte, F, Tom A. Young, Armstrong, Roly J., Young, Tom A., Duarte, Fernanda, Timothy J. Donohoe, Roly J. Armstrong, Akhtar, WM   +14 more
core   +1 more source

Synthesis of 2,3-dihydronaphtho[2,3-d][1,3]thiazole-4,9-diones and 2,3-dihydroanthra[2,3-d][1,3]thiazole-4,11-diones and novel ring contraction and fusion reaction of 3H-spiro[1,3-thiazole-2,1'-cyclohexanes] into 2,3,4,5-tetrahydro-1H-carbazole-6,11-diones

Beilstein Journal of Organic Chemistry, 2013
Treatment of N-substituted 2-(methylamino)naphthoquinones 3 and -anthracene-1,4-diones 4 with S2Cl2 and DABCO in chlorobenzene gave the corresponding 2,3-dihydronaphtho[2,3-d][1,3]thiazole-4,9-diones 1 and 2,3-dihydroanthra[2,3-d][1,3]thiazole-4,11 ...
Lidia S. Konstantinova, Kirill A. Lysov, Ljudmila I. Souvorova, Oleg A. Rakitin   +3 more
doaj   +1 more source

Construction of Multiple-Substituted Chiral Cyclohexanes through Hydrogenative Desymmetrization of 2,2,5-Trisubstituted 1,3-Cyclohexanediones

, 2019
The construction of chiral multiple-substituted cyclohexanes motifs is a challenging topic in organic synthesis. By the combination of desymmetrization and remote stereocontrol, a ruthenium-catalyzed transfer hydrogenative desymmetrization of 2,2,5 ...
Hong-Qiang Shen (3331101), Chang-Bin Yu (1688080), Mu-Wang Chen (1415287), Yong-Gui Zhou (1415290), Bo Song (255492)   +4 more
core   +1 more source

Selective hydrogenation of arenes to cyclohexanes in water catalyzed by chitin-supported ruthenium nanoparticles

, 2016
The selective hydrogenation of arenes to cyclohexanes is promoted by Ru/chitin under aqueous conditions without the loss of C–O/C–N linkages. The selective hydrogenation of aromatic compounds to cyclohexanes was found to be promoted by chitin-supported ...

core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

A-value revisited: ring flip energy of chair structures in halogenated cyclohexanes by quantum chemical methods

, 2022
A-value is conventionally defined as the ring flip Gibbs energy of chair conformers in monosubstituted cyclohexanes. It is well accepted in organic chemistry as one of the proxies of steric hindrance of a substituent group with respect to hydrogen.
Taweetham Limpanuparb (3920594), Junming Ho (1342764), Wanutcha Lorpaiboon (7440218), Sopanant Datta (8204808)   +3 more
core   +1 more source