39 Result(s)
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Jun-Ling **ng
Chemistry
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Article
Open AccessExosome lncRNA IFNG-AS1 derived from mesenchymal stem cells of human adipose ameliorates neurogenesis and ASD-like behavior in BTBR mice
The transplantation of exosomes derived from human adipose-derived mesenchymal stem cells (hADSCs) has emerged as a prospective cellular-free therapeutic intervention for the treatment of neurodevelopmental di...
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Article
A novel EVA-based composite via ceramization toward excellent flame retardance performance and high-temperature resistance
The development of ceramifiable polymer composites is an important means to ensure public safety and meet the emergency operation of power supply lines of public facilities in case of fire. Although there have...
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Article
Clickable, Oxidation-Responsive and Enzyme-Degradable Polypeptide: Synthesis, Characterization and Side Chain Modification
Modifications at polypeptide side chains have been found to affect conformational and properties, which is a vital strategy to prepare functional polypeptides. This contribution describes the synthesis of homo...
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Article
(C5H9N2)[BiI4]: A One-Dimensional Bismuth-Based Organic–Inorganic Hybrid Material for Fast Rhodamine B Degradation Under Dark Condition
Lead-free organic–inorganic hybrid materials have attracted wide interest due to their excellent optoelectronic and photovoltaic properties. Herein, we synthesized a Bi-based hybrid material with one-dimension...
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Article
Two New Anti-Tobacco Mosaic Virus Quinoline Alkaloids from the Stems of Nicotiana tabacum
Two new quinoline alkaloids, 4-acetyl-7-isopropyl-6-methylquinolin-2(1H)-one (1) and 4-acetyl-7-isopropyl-5-methylquinolin-2(1H)-one (2), were isolated from the stems of Nicotiana tabacum. Their structures were d...
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Anti-Tobacco Mosaic Virus Chromone Derivatives from the Stems of Nicotiana tabacum
Two new compounds (1 and 2), together with five known (3–7) chromone derivatives, were isolated from the stems of Nicotiana tabacum (a gene-edited mutant cultivated by Yunnan China Tobacco Industry Co., Ltd.). Th...
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Article
Synthesis of Well-defined Poly(tetrahydrofuran)-b-Poly(a-amino acid)s via Cationic Ring-opening Polymerization (ROP) of Tetrahydrofuran and Nucleophilic ROP of N-thiocarboxyanhydrides
The synthesis of block copolymers of poly(tetrahydrofuran)-b-poly(α-amino acid) (PTHF-b-PAA) is challenging since it is difficult to combine the two blocks produced via different/conflicting ring-opening polymeri...
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Article
Syntheses and Crystal Structures of Benzyl Substituted Thiazolidin-2-cyanamide Derivatives
Reaction of thiazolidin-2-cyanamide and substituted benzyl bromide compounds in acetonitrile at room temperature afforded the 3-(2′-substituted benzyl)thiazolidin-2-cyanamide derivatives 1–13 in good yields. Comp...
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Article
Chromone Derivatives from the Stems of Sichuan Local Sun Cured Tobacco and Their Anti-TMV Activity
Two new chromone derivatives (1 and 2), together with four known (3–6) ones, were isolated from the stems of a local sun cured tobacco (Fenghuang tobacco, widely cultivated in Shifang prefecture, Sichuan Province...
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Article
Syntheses and Crystal Structures of Methyl N-Substituted-N′-Cyanocarbamimidothioates Derived from Dimethyl N-Cyanodithioiminocarbonate
Reaction of dimethyl N-cyanodithioiminocarbonate and arylamine or alkylamine compounds in the refluxing ethanol solution afforded the according methyl N-substituted-N′-cyanocarbamimidothioates 1–16 in good yields...
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Article
Open AccessDirect N-substituted N-thiocarboxyanhydride polymerization towards polypeptoids bearing unprotected carboxyl groups
Synthesis of poly(α-amino acid)s bearing carboxyl groups is a critical pathway to prepare biomaterials to simulate functional proteins. The traditional approaches call for carboxyl-protected monomers to preven...
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Article
Mechanism of Janus Polymerization: A DFT Study
Janus polymerization is featured as a combination of cationic and anionic growing ends in one living polymer chain. In the copolymerization of THF and CL catalyzed by lutetium triflates and initiated by propyl...
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Article
Two New Diphenyl Ether Derivatives from the Fermentation Products of the Endophytic Fungus Phomopsis asparagi
Two new diphenyl ethers (1 and 2) were isolated from the fermentation products of an endophytic fungus Phomopsis asparagi. Their structures were elucidated by spectroscopic methods, including extensive 1D and 2D ...
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Article
Two New Isobenzofuranone Derivatives from Phyllanthus emblica and Their Bioactivity
Two new isobenzofuranone derivatives, 5-(2-hydroxyethyl)-2,2-dimethyl-2H-furo[3,4-h]chromen-7(9H)-one (1) and 2,2-dimethyl-5-(2-oxopropyl)-2H-furo[3,4-h]chromen-7(9H)-one (2), were isolated from the fruit of Phyl...
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Facile Synthesis of Functional Poly(ε-caprolactone) via Janus Polymerization
Functionalized aliphatic polyesters attract increasing attentions as biocompatible and biodegradable polymers with broad applications in biological science. In this contribution, we propose a facile and contro...
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Thermal stability and products chemical analysis of olive leaf extract after enzymolysis based on TG–FTIR and Py–GC–MS
Olive leaf extract pretreated by enzymolysis was selected for studying the thermal stability at different heating rates by thermogravimetric coupled with infrared spectroscopy (TG–FTIR) and nonisothermal theor...
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Article
Ring-opening polymerization of l-lactide catalyzed by a novel molybdenum-based catalytic system
As a transparent material that can be completely biodegradable, poly(l-lactide) (PL-LA) has recently received considerable attention. In this study, it our first efforts to fabricate l-lactide (L-LA) by a novel m...
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Special photophysical properties of poly(2,11-diquinoxalinopyrene)s
A diquinoxalinopyrene (DQP) derivative and the corresponding oligomers (PDQPs) with M n of ca. 3300, 4200, 5600, and 7300 have been synthesized. It is found that the band gaps and ...
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Article
Chemical Constituents of Ampelopsis japonica
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Article
A-D-A small molecule donors based on pyrene and diketopyrrolopyrrole for organic solar cells
Three new electron donating small molecules (SMs), Pyr(EH-DPP)2, Pyr(HD-DPP)2 and PyrA(EH-DPP)2, are designed and synthesized through coupling electron rich pyrene core with electron deficient diketopyrrolopyrrol...
