Insecticidal Activity of Monoterpenoids Against Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst: Preliminary Structure–Activity Relationship Study DOI Open Access
Andrés G. Sierra-Quitian, Juliet A. Prieto-Rodríguez, Oscar J. Patiño-Ladino

и другие.

International Journal of Molecular Sciences, Год журнала: 2025, Номер 26(7), С. 3407 - 3407

Опубликована: Апрель 5, 2025

To contribute to the search for effective substances in pest control, this study describes fumigant and contact toxicity against Tribolium castaneum Sitophilus zeamais of four essential oils (EOs) some their major chemical constituents. The EOs from Tagetes zypaquirensis, Anethum graveolens, Satureja viminea Minthostachys mollis were obtained by steam distillation chemically characterized using GC-MS. In development research, monoterpenoids isolated EOs, others purchased commercially, synthesized most active present EOs. main components dill ether (28.56%), α-phellandrene (25.78%) carvone (23.67%) A. piperitone oxide (30.40%) pulegone (25.91%) M. mollis, (37.40%) p-menth-3-en-8-ol (11.83%) S. viminea, dihydrotagetone (32.13%), myrcene epoxide (19.64%) β-myrcene (5.30%) T. zypaquirensis. results highlight action (LC50) (LD50) EO (LC50 4.8 µL/L air LD50 6.5 µg/insect) 7.0 5.81 µg/insect). Among constituents evaluated, R-carvone 2, 5 R-pulegone 6 stand out insecticidal potential between 3.0 42.4 µL/L, while 14.9 24.6 2.2 13.1 Preliminary structure-activity analysis suggests that presence carbonyl group with conjugated double bonds cyclic monoterpenes is important exhibited.

Язык: Английский

Arbicid NUK-15 – a New Industrially Available Reagent for Prilezhaev Oxidation of Natural Cyclic Monoterpene Olefins DOI
M. P. Yakovleva,

А. А. Коваленко,

В. А. Выдрина

и другие.

Chemistry of Natural Compounds, Год журнала: 2025, Номер unknown

Опубликована: Фев. 7, 2025

Язык: Английский

Процитировано

0
Catalytic Asymmetric Synthesis of β-Amino α-Tertiary Alcohol through Borrowing Hydrogen Amination DOI
Shahida Perveen, Tariq Ali, Talat S. Rahman

и другие.

Organic Letters, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

The first enantioconvergent transition-metal-catalyzed amination of racemic α-tertiary 1,2-diols providing access to vicinal β-amino alcohols is disclosed. iridium-catalyzed reaction proceeds through a chiral phosphoric acid-mediated borrowing hydrogen pathway with excellent yields and enantioselectivities for range amine nucleophiles 1,2-diols. An array were obtained high (50 examples up 91% yield 99% ee). These important amino alcohol products can be easily converted into ligands bioactive skeletons. Mechanistic investigations proposed dynamic kinetic resolution involving imine formation then reduction as the enantiodetermining step.

Язык: Английский

Процитировано

0
Insecticidal Activity of Monoterpenoids Against Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst: Preliminary Structure–Activity Relationship Study DOI Open Access
Andrés G. Sierra-Quitian, Juliet A. Prieto-Rodríguez, Oscar J. Patiño-Ladino

и другие.

International Journal of Molecular Sciences, Год журнала: 2025, Номер 26(7), С. 3407 - 3407

Опубликована: Апрель 5, 2025

To contribute to the search for effective substances in pest control, this study describes fumigant and contact toxicity against Tribolium castaneum Sitophilus zeamais of four essential oils (EOs) some their major chemical constituents. The EOs from Tagetes zypaquirensis, Anethum graveolens, Satureja viminea Minthostachys mollis were obtained by steam distillation chemically characterized using GC-MS. In development research, monoterpenoids isolated EOs, others purchased commercially, synthesized most active present EOs. main components dill ether (28.56%), α-phellandrene (25.78%) carvone (23.67%) A. piperitone oxide (30.40%) pulegone (25.91%) M. mollis, (37.40%) p-menth-3-en-8-ol (11.83%) S. viminea, dihydrotagetone (32.13%), myrcene epoxide (19.64%) β-myrcene (5.30%) T. zypaquirensis. results highlight action (LC50) (LD50) EO (LC50 4.8 µL/L air LD50 6.5 µg/insect) 7.0 5.81 µg/insect). Among constituents evaluated, R-carvone 2, 5 R-pulegone 6 stand out insecticidal potential between 3.0 42.4 µL/L, while 14.9 24.6 2.2 13.1 Preliminary structure-activity analysis suggests that presence carbonyl group with conjugated double bonds cyclic monoterpenes is important exhibited.

Язык: Английский

Процитировано

0