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Synthesis of phosphorus-containing polyoxamacrocycles with one to two reactive thiophosphoryl chloride groups

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Chinese Chemical Letters 2008年第5期19卷 553-555页

作者： xiao mei zhang Dao Quan Wang Wan Yi Chen Department of Applied Chemistry China Agricultural University Beijing 100094 China College of Chemical Engineering Anhui University of Science and Technology Huainan 232001 China

Novel phosphorus-containing polyoxamacrocycles with one to two reactive thiophosphoryl chloride groups 5, 6, 7, 8 were synthesized from bishydroxyl compounds 1, 2, 3, 4 and thiophosphoryl chloride respectively. Their ... 详细信息

关键词： Phosphorus-containing macrocycle Phosphorus-containing polyoxamacrocycle Thiophosphoryl chloride cyclization

Characterizations of semihoops based on derivations

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Applied Mathematics(A Journal of Chinese Universities) 2024年第2期39卷 291-310页

作者： WANG mei zhang xiao-hong School of Electrical and Control Engineering Shaanxi University of Science and TechnologyXi'an 710021China School of Arts and Sciences Shaanxi University of Science and TechnologyXi'an 710021China School of Mathematics and Statistics Weinan Normal UniversityWeinan 714099China

In this paper,we discuss the related properties of some particular derivations in semihoops and give some characterizations of ***,we prove that every Heyting algebra is isomorphic to the algebra of all multiplicative derivations and show that every Boolean algebra is isomorphic to the algebra of all implicative ***,we show that the sets of multiplicative and implicative derivations on bounded regular idempotent semihoops are in oneto-one correspondence.

关键词： (prelinear)semihoop derivation Heyting algebra Galois connection

Synthesis and thermal properties of novel calix[4]arene derivatives containing 1,2,3-triazole moiety via K_2CO_3-catalyzed 1,3-dipolar cycloaddition reaction

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Chinese Chemical Letters 2014年第10期25卷 1346-1348页

作者： Zai-Gang Luo Yu Zhao Feng Xu Chao Ma Xue-mei Xu xiao-mei zhang College of Chemical Engineering Anhui University of Science & Technology

Two calix[4]arene derivatives containing 1,2,3-triazole moiety were synthesized via K2CO3-catalyzed1,3-dipolar cycloaddition reaction between calix[4]arene-based azide and active methylene compounds in good *** structures of the two compounds synthesized herein were fully confirmed by 1HNMR,,（13）C NMR,and MS（ESI）.The thermal analysis showed that the mass losses of the synthesized compounds 4 and 5 containing 1,2,3-triazole groups are similar to each other.

关键词： Calixarene derivative 1 2 3-Triazole 1 3-Dipolar cycloaddition Synthesis

Analysis of 234 cases of colorectal polyps treated by endoscopic mucosal resection

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World Journal of Clinical Cases 2020年第21期8卷 5180-5187页

作者： Lu Yu Na Li xiao-mei zhang Tao Wang Wei Chen Department of Gastroenterology Maanshan Central HospitalMaanshan 243000Anhui ProvinceChina Department of Gastroenterology Affiliated Hospital of Southeast UniversityNanjing 210009Jiangsu ProvinceChina

BACKGROUND Colorectal polyps refer to all neoplasms that protrude into the intestinal *** believe that 50%-70%of colorectal cancers originate from adenomatous *** To investigate the endoscopic morphologic features,pathologic types,and clinical situation;evaluate the efficacy and safety of endoscopic mucosal resection(EMR);and guide clinicians in their daily *** Two hundred thirty-four patients who underwent EMR in our hospital from January 1,2018 to December 31,2019 were *** including sex,age,endoscopic morphology of the polyps,and pathological characteristics were analyzed among *** A total of 295 polyps were resected from the 234 subjects enrolled in the study,of which 4(1.36%)were Yamada type *** were 75(25.42%)type II,101(34.24%)type III,and 115(38.98%)type IV *** them,41 were nonadenomas,110 were low-risk adenomas,139 were high-risk adenomas,and 5 were *** differences in distribution were not statistically significant,with P values greater than *** risk of cancer significantly increased for polyps≥1 cm in diameter(c2=199.825,P=0.00).Regarding the endoscopic morphological features,congestion,erosion,and lobulation were more common on the surface morphology of high-risk adenomas and cancerous polyps(c2=75.257,P=0.00),and most of them were Yamada types III and *** all,6 of the 295 polyps could not be removed completely,with a one-time resection rate of 97.97%.There were two cases of postoperative bleeding and no cases of perforation,with an overall complication rate of 0.09%.CONCLUSION Colorectal polyps ranging from non-adenomatous polyps,low-risk adenomas,and high-risk adenomas to adenocarcinomas each has their own endoscopic features,while EMR,as a mature intervention,has good safety and operability and should be promoted clinically,especially at the primary care level.

关键词： Colorectal polyp Endoscopic mucosal resection High-risk adenoma Risk factors Adenocarcinomas 1,4-bis(diphenylphosphino)butane

Clinical features of postinfectious bronchiolitis obliterans in children undergoing long-term nebulization treatment

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World Journal of Pediatrics 2018年第5期14卷 498-503页

作者： xiao-mei zhang Ai-Zhen Lu Hao-Wei Yang Li-Ling Qian Li-Bo Wang xiao-Bo zhang Respiratory Department Children's Hospital of Fudan University399 Wan Yuan RdShanghaiChina Radiology Department Children's Hospital of Fudan University399 Wan Yuan RdShanghaiChina

Background Limited data are available in relation to the clinical features of PIBO undergoing prolonged nebulization treat-ment with budesonide, terbutaline and ipratropium bromide. This retrospective study aimed to outline the features of clini-cal, high-resolution computed tomography (HRCT) and pulmonary function test (PFT) of PIBO, undergoing maintenance therapy utilizing a triple nebulization treatment and to determine the factors associated with prognosis. Methods Children diagnosed with PIBO were followed up between April 2014 and March 2017. The clinical features after maintenance nebulization treatment for 12 months were thereafter summarized. Results Thirty patients, 21 boys and 9 girls, were enrolled in the study. The median age of patients was 17.4 months, with a range between 3.0 and 33 months. Persistent coughing and wheezing were detected whilst wheezing and crackles were the common manifestations presented. HRCT scans revealed patchy ground and glass opacity, while PFT showed fixed airway obstruction in all patients. Four patients were lost during follow-up. After treatment, the clinical symptoms were improved greatly in all patients (P<0.01). The mean increase in the percentage of TPEF%TE and VPEF%VE were improved greatly (P < 0.01). Images of the HRCT scan indicated marked improvements in 18 patients (81.8%) in comparison with scans obtained pre-treatment. Conclusions Our data suggest a potential role of long-term nebulization treatment of budesonide, terbutaline, ipratropium bromide on PIBO, due to its efficacy as indicated in the improved clinical symptoms, pulmonary functions and CT manifesta-tions identified in the children. New prospective and controlled studies are required to confirm this proposition.

关键词： Clinical features Nebulization treatment Post-infectious bronchiolitis obliterans Prognosis

Asymmetric Synthesis of N-(Diphenylphosphinyl)furfurylamine by the Enantioselective Alkylation of Furfurylimine

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Chinese Chemical Letters 2005年第9期16卷 1147-1150页

作者： Hai Le zhang xiao mei zhang Xin LI Ai Qiao MI Xin CUI Yao Zhong JIANG Key Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan Province and Union Laboraotry of Asymmetric Synthesis Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041

Optically active N-（diphenylphosphinyl）furfurylamines 2 with good ee values were obtained by the enantioselective addition of dialkylzincs to furfuryl imine 1 in the presence of chiral aminoalcohol derivatives and o... 详细信息

关键词： Asymmetric dialkylzinc N-(diphenylphosphinyl)furfurylarnine.

Using the Phosphomannose Isomerase (PMI) Gene from Saccharomyces cerevisiae for Selection in Rice Transformation

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Journal of Integrative Agriculture 2012年第9期11卷 1391-1398页

作者： WANG Tao LIU Liang-yu TANG Yong-yan zhang xiao-bo zhang mei-dong ZHENG Yong-lian zhang Fang-dong National Key Laboratory of Crop Genetic Improvement Ministry of Science and Technology/Huazhong Agricultural University Wuhan 430070P. R. China

The phosphomannose isomerase （PMI） gene from Saccharomyces cerevisiae acted as selectable marker and mannose acted as selective agent for the production of transgenic plants of rice （Oryza sativa L.） via Agrobacterium-mediated transformation. The concentration of mannose during the selection was stepwise increased, 5 g L-1 mannose combined with 15 g L-1 sucrose and 500 mg L-1 cefotaxime was used in the initial selection stage, then the concentration of mannose was increased to 11 g L-1, the highest transformation rate was 20.0%. The integration of PMI gene was confirmed by PCR, and the result of RT-PCR assay proved that the intron of PMI gene can be excised correctly during RNA splicing. 13- Glucuronidase （GUS） activity analysis confirmed the expression of GUS gene. All those means the PMI gene from yeast can be used as a selectable marker in rice transformation.

关键词： phosphomannose isomerase selectable marker Saccharomyces cerevisiae transformation rice

Synthesis and anti-integrase evaluation of novel calix[4]arene derivatives containing the triazolyl 1,3-diketo moiety

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Chinese Chemical Letters 2014年第5期25卷 737-740页

作者： Zai-Gang Luo Yu Zhao Chao Ma Xue-mei Xu xiao-mei zhang Nian-Yu Huang Hong-Qiu He College of Chemical Engineering Anhui University of Science & Technology College of Chemistry and Life Sciences China Three Gorges University Chongqing Center for Biomedicines and Medical Equipment Chongqing Academy of Science and Technology

A series of novel calix[4]arene derivatives incorporating two triazolyl 1 3-diketo subunits in alternate positions at the lower rim were synthesized and screened for HⅣ integrase inhibition *** chemical structures of these compounds were confirmed by means of1H NMR 13C NMR,and *** bioassays indicated that calix[4]arene derivatives proved to be more active than p-tertbutylcalix[4]arene *** particular,compound 4g presented the most potent integrase strand transfer inhibitory activity with an IC50value of 6.1 mmol/L.

关键词： HIV-1 integrase inhibitor Calixarene derivative 1 2 3-Triazole 1 3-Diketo Strand transfer

Three-dimensionally ordered macroporous cross-linked polystyrene incorporating functional group via hydrophilic spacer arm

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Chinese Chemical Letters 2010年第12期21卷 1493-1496页

作者： Li Xia Yuan xiao mei Wang Xu zhang Pan Ge Liu Wei Dong Yan Institute of Polymer Science and Engineering Hebei University of Technology Tianjin 300130 China

A versatile and effective method for incorporating functional groups on the pore wall of three-dimensionally ordered macroporous cross-linked polystyrene（3DOM CLPS） by hydrophilic spacer arm has been *** 3DOM CLPS with pore size 865 nm was prepared by sacrifice template *** hydrophilic spacer arm（polyethylene glycol,molecular weight is 600） was grafted to the 3DOM CLPS via nucleophilic substitution *** other side of active hydroxyl can be further converted into a lot of other functional *** this report,the chelating ligand 2-mercaptobenzothiazole（MBZ） group was introduced on the end of the PGE chain to evidence the versatile functionalization *** functionalized ordered macroporous materials were characterized by FT-IR,element analyzer,*** results reveal that the pores were successfully bonded with 2-mercaptobenzothiazole groups via hydrophilic spacer arms and the original morphology of ordered macroporous materials were remained after *** MBZ group density is 0.052 mmol/m^*** functionalized 3DOM CLPS are expected to application as heavy metal ions adsorbent.

关键词： Three-dimensionally ordered macroporous polymer Functionalization Hydrophilic space arm Heterocyclic functional group