Effect of chiral polyhydrochromenes on cannabinoid system
作者:Nikolai S. Li-Zhulanov、Irina V. Il’ina、Andrea Chicca、Patricia Schenker、Oksana S. Patrusheva、Ekaterina V. Nazimova、Dina V. Korchagina、Mikhail Krasavin、Konstantin P. Volcho、Nariman F. Salakhutdinov
DOI:10.1007/s00044-019-02294-9
日期:2019.4
reactions of monoterpenoids (−)-isopulegol, (+)-neoisopulegol and (1R,2R,6S)-3-methyl-6-(prop-1-en-2-yl)cyclohex-3-ene-1,2-diol 5 with aromatic and heteroaromatic aldehydes. These compounds resemble in structure phytocannabinoids, some of them demonstrated analgesic activity in vivo. Polyhydrochromenes containing amino groups were obtained through the interaction of (−)-isopulegol with 5-hydroxymethylfurfural
Synthesis of Fluorinated Octahydro-2H-Chromenes in the Presence of the BF3·Et2O–H2O Catalytic System
作者:Irina V. Il’ina、Oksana S. Patrusheva、Dina V. Korchagina、Konstantin P. Volcho、Nariman F. Salakhutdinov
DOI:10.1007/s10593-020-02743-z
日期:2020.7
the monoterpenoid (–)-isopulegol and carbonyl compounds in the presence of the BF3·Et2O–H2O system, which acts as both an acid catalyst and a fluorine source. The use of the readilyavailable and easy-to-use BF3·Et2O reagent makes this method of obtaining fluorinederivatives simple and practical.
(-)-Isopulegol undergoes Prins cyclization reaction in the presence of 20 wt% of acid-treated montmorillonite K10 to produce octahydro-2H-chromen-4-ols in good yields and with high cis selectivities under solvent-free conditions. The solid-acid catalyst can be reused without loss of its activity.
Two-step synthesis of monoterpenoid dioxinols exhibiting analgesic activity from isopulegol and benzaldehyde over heterogeneous catalysts
作者:Martina Stekrova、Päivi Mäki-Arvela、Ewelina Leino、Karolina M. Valkaj、Kari Eränen、Atte Aho、Annika Smeds、Narendra Kumar、Konstantin P. Volcho、Nariman F. Salakhutdinov、Dmitry Yu. Murzin
DOI:10.1016/j.cattod.2016.03.046
日期:2017.1
Abstract Benzodioxinols, compounds with 6-memberedheterocyclescontaining two oxygen atoms, exhibit promising analgesic activity. In the current study, synthesis of dioxinol via two-step approach including Prins cyclization of isopulegol with benzaldehyde to tetrahydropyran and its ring-rearrangement to dioxinol was investigated. Different acidic and basic catalysts were studied in the second step
摘要 苯并二恶英醇是一种含有两个氧原子的六元杂环化合物,具有良好的镇痛活性。在目前的研究中,研究了通过两步法合成二恶英,包括异胡薄荷醇与苯甲醛的普林斯环化为四氢吡喃及其环重排为二恶英。在第二步中研究了不同的酸性和碱性催化剂,使用介孔 Ce 复合材料实现了对二恶英的最高选择性。
Acid-modified Halloysite Nanotubes as a Stereoselective Catalyst for Synthesis of 2<i>H</i>
-Chromene Derivatives by the Reaction of Isopulegol with Aldehydes
作者:Alexander Yu. Sidorenko、Anna V. Kravtsova、Atte Aho、Ivo Heinmaa、Konstantin P. Volcho、Nariman F. Salakhutdinov、Vladimir E. Agabekov、Dmitry Yu. Murzin
DOI:10.1002/cctc.201800974
日期:2018.9.20
chromenol exhibiting high analgesic activity was achieved. An increase in stereoselectivity with a decrease in the halloysite drying temperature and catalyst acidity clearly indicates formation of 4R diastereomer on the weak Brønsted sites. This work is an example that control of the stereoselectivity of acid‐catalyzed organic reactions can be effectively carried out by varying water content on the aluminosilicate