Green Synthesis Characterization and Thermotropic Behaviour of O-Linked Glycopyranosides of Phenolic Esters
Focusing on green chemistry protocols, a series of carbohydrate derivatives (5a–l) have been synthesized by Fischer glycosylation of α-D-glucose, D-xylose, and α-maltose with several nonpolar phenolic ester aglycones (3a–d) derived from menthol by employing solid-supported Si-H+ as the catalyst. In...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2020/3120657 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832553466395885568 |
|---|---|
| author | Saliha Nazir Dure Najaf Iqbal Hina Daud Ambreen Ghani Shagufta Nasir Saima Naz Erum Akbar Hussain |
| author_facet | Saliha Nazir Dure Najaf Iqbal Hina Daud Ambreen Ghani Shagufta Nasir Saima Naz Erum Akbar Hussain |
| author_sort | Saliha Nazir |
| collection | DOAJ |
| description | Focusing on green chemistry protocols, a series of carbohydrate derivatives (5a–l) have been synthesized by Fischer glycosylation of α-D-glucose, D-xylose, and α-maltose with several nonpolar phenolic ester aglycones (3a–d) derived from menthol by employing solid-supported Si-H+ as the catalyst. In order to study the extent of mesomorphism in target molecules, the thermotropic behaviour has been studied by using the thermoanalytic DSC/TGA technique and polarized optical microscope. Phase transitions in the DSC thermograms of 5a–l with two endothermic melting point peaks and various exothermic crystalline transitions exhibits the existence of mesophases. However, optical photomicrographs revealed that the new glycopyranosides formed smectic A phases. Moreover, all the compounds (3a–d and 5a–l) were confirmed by FTIR and 1H NMR. |
| format | Article |
| id | doaj-art-5aa7dcb1659b410398bfdb4dd5681408 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-5aa7dcb1659b410398bfdb4dd56814082025-02-03T05:53:53ZengWileyJournal of Chemistry2090-90632090-90712020-01-01202010.1155/2020/31206573120657Green Synthesis Characterization and Thermotropic Behaviour of O-Linked Glycopyranosides of Phenolic EstersSaliha Nazir0Dure Najaf Iqbal1Hina Daud2Ambreen Ghani3Shagufta Nasir4Saima Naz5Erum Akbar Hussain6Department of Chemistry, Lahore College for Women University, Lahore 54000, PakistanDepartment of Chemistry, University of Lahore, Lahore 55150, PakistanDepartment of Chemistry, Lahore College for Women University, Lahore 54000, PakistanDepartment of Chemistry, University of Education Lahore, Vehari Campus, Vehari 61100, PakistanDepartment of Chemistry, Lahore College for Women University, Lahore 54000, PakistanDepartment of Chemistry, University of Education Lahore, Multan Campus, Multan, PakistanDepartment of Chemistry, Lahore College for Women University, Lahore 54000, PakistanFocusing on green chemistry protocols, a series of carbohydrate derivatives (5a–l) have been synthesized by Fischer glycosylation of α-D-glucose, D-xylose, and α-maltose with several nonpolar phenolic ester aglycones (3a–d) derived from menthol by employing solid-supported Si-H+ as the catalyst. In order to study the extent of mesomorphism in target molecules, the thermotropic behaviour has been studied by using the thermoanalytic DSC/TGA technique and polarized optical microscope. Phase transitions in the DSC thermograms of 5a–l with two endothermic melting point peaks and various exothermic crystalline transitions exhibits the existence of mesophases. However, optical photomicrographs revealed that the new glycopyranosides formed smectic A phases. Moreover, all the compounds (3a–d and 5a–l) were confirmed by FTIR and 1H NMR.http://dx.doi.org/10.1155/2020/3120657 |
| spellingShingle | Saliha Nazir Dure Najaf Iqbal Hina Daud Ambreen Ghani Shagufta Nasir Saima Naz Erum Akbar Hussain Green Synthesis Characterization and Thermotropic Behaviour of O-Linked Glycopyranosides of Phenolic Esters Journal of Chemistry |
| title | Green Synthesis Characterization and Thermotropic Behaviour of O-Linked Glycopyranosides of Phenolic Esters |
| title_full | Green Synthesis Characterization and Thermotropic Behaviour of O-Linked Glycopyranosides of Phenolic Esters |
| title_fullStr | Green Synthesis Characterization and Thermotropic Behaviour of O-Linked Glycopyranosides of Phenolic Esters |
| title_full_unstemmed | Green Synthesis Characterization and Thermotropic Behaviour of O-Linked Glycopyranosides of Phenolic Esters |
| title_short | Green Synthesis Characterization and Thermotropic Behaviour of O-Linked Glycopyranosides of Phenolic Esters |
| title_sort | green synthesis characterization and thermotropic behaviour of o linked glycopyranosides of phenolic esters |
| url | http://dx.doi.org/10.1155/2020/3120657 |
| work_keys_str_mv | AT salihanazir greensynthesischaracterizationandthermotropicbehaviourofolinkedglycopyranosidesofphenolicesters AT durenajafiqbal greensynthesischaracterizationandthermotropicbehaviourofolinkedglycopyranosidesofphenolicesters AT hinadaud greensynthesischaracterizationandthermotropicbehaviourofolinkedglycopyranosidesofphenolicesters AT ambreenghani greensynthesischaracterizationandthermotropicbehaviourofolinkedglycopyranosidesofphenolicesters AT shaguftanasir greensynthesischaracterizationandthermotropicbehaviourofolinkedglycopyranosidesofphenolicesters AT saimanaz greensynthesischaracterizationandthermotropicbehaviourofolinkedglycopyranosidesofphenolicesters AT erumakbarhussain greensynthesischaracterizationandthermotropicbehaviourofolinkedglycopyranosidesofphenolicesters |