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solid-phase synthesis of a Novel Kind of Hydroxylated Heterocyclic Ketene Aminals

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Chinese Chemical Letters 2006年第11期17卷 1451-1453页

作者： Tao PENG Chu Yi YU Zhi Tang HUANG Beijing National Laboratory for Molecular Science （BNLMS） Laboratory for Chemical Biology Institute of Chemistry Chinese Academy of Sciences Beijing 100080 Graduate University of The Chinese Academy of Sciences Beijing 100049

An efficient solid-phase synthesis method for novel heterocyclic ketene aminals containing a hydroxyl group has been developed. The loading of the substrate on the resin through the hydroxyl group and the protection o... 详细信息

关键词： solid-phase synthesis Schiff base hydroxylated heterocyclic ketene aminals.

solid-phase synthesis of PNA Monomer by Ugi Four-component Condensation Reaction

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Chinese Chemical Letters 2005年第5期16卷 585-588页

作者： WenHaoWANG XiaoMinZOU XinZHANG YiQiuFU PingXU DepartmentofMedicinalChemistry SchoolofPharmaceuticalSciencesPekingUniversityBeijing100083

Peptide nucleic acids (PNA) oligomers were synthesized in most cases by peptide synthesis from N-protected monomers. In this work a new method of obtaining PNA monomer by Ugi four-component condensation reaction was tested by solid-phase synthesis. The Fmoc protected PNA monomer was build up with thymin-1-yl acetic acid, 3-methylbutyl aldehyde, Fmoc protected aminoethyl isocyanide and Gly-Wang resin.

关键词： Peptide nucleic acids (PNA) Ugi four-component condensation reaction (U-4CR) solid-phase synthesis Isocyanide.

Scalable solid-phase synthesis of defect-rich graphene for oxygen reduction electrocatalysis

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Green Energy & Environment 2023年第1期8卷 224-232页

作者： Chunxiao Dong Li Yang Cheng Lian Xiaoling Yang Yihua Zhu Hongliang Jiang Chunzhong Li Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237China Key Laboratory for Ultrafine Materials of Ministry of Education School of Chemical EngineeringEast China University of Science and TechnologyShanghai200237China Institutes of Physical Science and Information Technology Anhui UniversityHefeiAnhui230601China School of Chemistry and Molecular Engineering East China University of Science and TechnologyShanghai200237China

Defect-engineered carbon materials have been emerged as promising electrocatalysts for oxygen reduction reaction(ORR)in metal-air *** a facile strategy for the preparation of highly active nanocarbon electrocatalysts remains ***,a low-cost and simple route is developed to synthesize defective graphene by pyrolyzing the mixture of glucose and carbon *** dynamics simulations reveal that the graphene formation is ascribed to two-dimensional layered feature of carbon nitride,and high compatibility of carbon nitride/glucose *** measurements suggest that the graphene possesses rich edge and topological *** graphene catalyst exhibits higher power density than commercial Pt/C catalyst in a primary Zn-air *** experimental results and theoretical thermodynamic analysis,it is identified that graphitic nitrogen-modified topological defects at carbon framework edges are responsible for the decent ORR *** strategy presented in this work can be can be scaled up readily to fabricate defective carbon materials.

关键词： Carbon materials Electrocatalysis Oxygen reduction reaction solid-phase synthesis Zn-air battery

Automated Chemical solid-phase synthesis of Glycans

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Chinese Journal of Chemistry 2022年第14期40卷 1714-1728页

作者： Xiaona Li You Yang Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism Shanghai Key Laboratory of New Drug DesignEngineering Research Center of Pharmaceutical Process ChemistryMinistry of EducationSchool of PharmacyEast China University of Science and Technology130 Meilong RoadShanghai 200237China

Automated chemical solid-phase synthesis is an automation platform for rapid and reliable synthesis of *** the seminal work of Automated Glycan Assembly(AGA)disclosed by Seeberger in 2001,AGA has evolved from a proof-of-concept to a robust and reliable technology for streamlined production of various types of *** more than 20 years of unceasing efforts,the major breakthroughs in AGA including linkers,approved building blocks,and synthesizers have been acquired,and numerous influential achievements have been made in complex glycan *** addition,the HPLC-assisted automated synthesis emerges as a promising automation platform to access *** this review,we highlight the key advances in the field of automated chemical solid-phase synthesis,especially in *** synthesis of representative glycans based on AGA is also described.

关键词： Carbohydrates Oligosaccharides Glycosylation solid-phase synthesis Automated glycan assembly

A Rapid solid-phase synthesis to Soluble Oligothiophene Molecular Wires

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Chinese Chemical Letters 2006年第4期17卷 437-440页

作者： Hong Ming ZHANG Xian Hong WANG Xiao Jiang ZHAO Ji LI Fo Song WANG Polymer Material Engineering Lab Changchun Institute of Applied Chemistry CAS Changchun 130022

A novel method for the preparation of oligothiophene molecular wires is described via a bi-directional solid-phase synthesis. Using an alternating sequence of bromination and Stille coupling reactions, oligomers were ... 详细信息

关键词： solid-phase synthesis molecular wires oligothiophene.

synthesis of a highly hydrophobic cyclic decapeptide by solid-phase synthesis of linear peptide and cyclization in solution

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Chinese Chemical Letters 2010年第4期21卷 391-394页

作者： Chen, Jian Zhang, Bei Xie, Cao Lu, Yi Wu, Wei Fudan Univ Sch Pharm Shanghai 201203 Peoples R China

A general method was described to synthesize a highly hydrophobic cyclic peptide,cyclo[LWLWLWLWLQ]where underlines indicate D-configuration of the amino acid,by a two-step solid-phase/solution synthesis *** linear decapeptide was assembled by standard Boc chemistry on solid-phase and subsequently cyclized in solution with high efficiency and reproducibility. In subsequent purification by semi-preparative HPLC,50%(v/v) DMF/H_2O was employed as the solvent to overcome the difficulty of solubilization...

关键词： Cyclic peptide Decapeptide cyclo[LWLWLWLWLQ] solid-phase synthesis Cyclization Purification

Polymer-support Selenium-induced Electrophilic Cyclization:solid-phase synthesis of Flavonoids

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Chinese Chemical Letters 2006年第7期17卷 857-858页

作者： Jian CAO E TANG Xuan HUANG Lu Ling WU Xian HUANG Department of Chemistry Zhejiang University （Xixi Campus） Hangzhou 310028 State Key Laboratory of Organometallic-Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 354 Fenglin Lu Shanghai 200032

The Lewis acid mediated polystyrene supported selenium cyclization of chalcones and oxidative cleavage of selenium resins flavonoids in good yields and purities have been reported. induced intramolecular gave the cor... 详细信息

关键词： Flavonoids selenenyl bromide resin solid-phase synthesis electrophilic cyclization.

Design and solid-phase synthesis of Multiple Muramyl Dipeptide (MMD)

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Chinese Chemical Letters 2001年第10期12卷 887-888页

作者： Shuo De ZHANG Gang LIU Su Quan XIA Beijing Institute of Pharmacology and Toxicology Beijing 100850 Institute of Materia Medica Chinese Academy of Medical Sciences and Perking Union Medical CollegeBeijing 100050

As a non-specific modulator of macrophage, multiplied muramyl dipeptide (MMD) is solid-phase synthesized by application of standard Fmoc chemistry strategy. Tarn's multiple antigen system (MAS) is used as our four bra... 详细信息

关键词： multiplied muramyl dipeptide multiple antigen system macrophage solid-phase synthesis

TMSOTf-catalyzed intramolecular seleno-arylation of tethered alkenes:A novel method for the solid-phase synthesis of dihydrocoumarins and coumarins

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Chinese Chemical Letters 2012年第6期23卷 631-634页

作者： E Tang Wen Li Zhang Yong Gao Xi Gu Key Laboratory of Medicinal Chemistry of Natural Resource （Yunnan University） Ministry of Education China Department of Applied Chemistry Yunnan University Kunming 650091 China

TMSOTf-catalyzed intramolecular seleno-arylation of tethered alkenes was performed using polystyrene-supported succini- midyl selenide as the selenium source. This catalytic process provides an efficient method for the regioselective synthesis of dihydrocoumarins possessing a seleno-functionality, followed by traceless cleavage of selenium linker to provide dihydrocoumar- ins and coumarins in good yields and purifies.

关键词： Lewis acid Seleno-arylation Succinimidyl selenide solid-phase synthesis Dihydrocoumarins Coumarins