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Synthesis of water-soluble cystine C_(60) derivative with catalyst and its active oxygen radical scavenging ability

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Chinese Chemical Letters 2007年第1期18卷 51-54页

作者： zhen Hu Wen Chao Guan Xiang Ying Tang li zhen Huang Hong xu Department of Chemistry Huazhong University of Science and Technology Wuhan 430074 China

A novel water-soluble cystine C60 derivative was synthesized in the presence of the catalyst, tetrabutylammonium hydroxide （TBAH）. The product was characterized by FT-IR, UV, ^1H NMR, ^13C NMR, MS and elemental analysis. Furthermore, the scavenging ability to superoxygen anion radical O2^·- and hydroxyl radical ^·OH was studied by chemiluminescence. It was found that cystine C60 derivative showed an excellent efficiency in eliminating superoxygen anion radical and hydroxyl radical. The 50% inhibition concentration （IC50） for superoxygen anion radical and hydroxyl radical were 0.167 and 0.008 mg/mL, respectively.

关键词： Cystine C60 derivatives TBAH Superoxygen anion radical Hydroxyl radical Chemiluminescence

Two New Polyoxygenated Cyclohexenes from Uvaria kweichowensis

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Chinese Chemical Letters 2005年第10期16卷 1343-1346页

作者： Qiong Ming xu Zhong Mei ZOU li zhen xu Shi lin YANG Institute of Medicinal Plant Development Peking Union Medical College and Chinese Academy of Medicinal Sciences Beijing 100094

Two new polyoxygenated cyclohexenes, kweichowenol A and B were isolated from the leaves of Uvaria kweichowensis and their structures were established on the basis of their spectral data.

关键词： Annonaceae Uvaria kweichowensis leaves cyclohexenes kweichowenol A kweichowenol B.

A New Cyclohexene Oxide from Uvaria tonkinensis ***

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Chinese Chemical Letters 2003年第11期14卷 1144-1145页

作者： An liU Zhong Mei ZOU li zhen xu Shi lin YANG Institute of Medicinal Plant Development Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100094

A new compound, subglain B, was isolated from the stems of Uvaria tonkinensis var. subglabra and its structure was identified as 1S, 2R, 3S, 6R-1-benzoyloxymethylene-1,2- dihydroxy-3-benzoyloxy-6-chlorocyclohex-4-ene ... 详细信息

关键词： Uvaria tonkinensis var subglabra subglain B cyclohexene.

Two New Saponins from Lysimachia capillipes Hemsl.

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Journal of Integrative Plant Biology 2005年第10期47卷 1271-1275页

作者： Jing-Kui TIAN Zhong-Mei ZOU li-zhen xu Shi-lin YANG Department of Chinese Medicine Sciences and Engineering Zhejiang University Hangzhou 310027 China Institute of Medicinal Plants Development Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100094 China

To investigate the saponins from whole plants of Lysimachia capilUpes Hemsl., two new saponins, named capilliposide E （1） and capilliposide F （2）, were isolated. The structures of the new saponins were elucidated as 3β, 22α-dihydroxy-16α-acetat-28→ 13-lactone-oleanane-3-O- [β-D-glucopyranosyl- （1 →2）-α-L-arabinpyranoyl]-22-O-β-D-glucopyranoside （1） and 3β, 22α-dihydroxy- 16α-acetat-28→ 13-lactone-oleanane-3-O-{ [β-D-glucopyranosyl-（1→2）-β-D-glucopyranosyl-（1→4）]-α-L-arabinpyranoyl}-22-O-β- D-glucopyranoside （2）. The structures of these compounds were determined by 1D- and 2D-NMR, MS techniques, and chemical methods.

关键词： capilliposide E and F, Lysimachia capillipes triterpene saponin.

New Cytotoxic Saponins from Lysimachia davurica Ledeb.

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Journal of Integrative Plant Biology 2006年第2期48卷 232-235页

作者： Jing-Kui Tian Zhong-Mei Zou li-zhen xu Shi-lin Yang Department of Chinese Medicine Sciences and Engineering Zhejiang University Hangzhou 310028 China Institute of Medicinal Plants Development Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100094 China

To investigate the saponins from whole plants of Lysimachia davurica Ledeb., two new saponins named davuricoside I （compound 1） and E （compound 2） were isolated. Their chemical structures were elucidated as 3β, 16α, 28, 29-tetrihydroxy-olean-12-en-3-O-β-D-glucopyranosyl-（1→2）-β-D-glucuronopyranoside （compound 1） and 3β, 16α, 29-trihydroxy-13, 28-epoxy-oleanane-3-O-β-D-glucopyranosyl-（1→2）-β-D-glucuronopyranoside （compound 2） on the basis of their one- and two-dimensional nuclear magnetic resonance and mass spectrometry data, and chemical methods. Compound 1 showed significant cytotoxic activity against human A2780 cells.

关键词： davuricoside I and E Lysimachia davurica triterpene saponin.

High laser damage threshold coatings and damage testing technology

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光学精密工程 2005年第4期13卷 500-504页

作者： MA Ping HU Jian-ping CHEN Song-lin TANG Ming WANG zhen li Wei xu Qiao Chengdu Fine Optical Engineering Research Center Chengdu 610041China

The laser-induced damage threshold(liDT) of optical coating is a limited factor for development of a high peak power laser. The automatic damage testing facility was built to determine the liDT of optics at 1 064 nm and 355 nm.. The cleanning and processing procedure of the substrate and coating technique were improved, and the damage resistance of high-reflective coating at 1 064 nm was increased.

关键词：激光涂覆技术 liDT 自动机械光学仪器激光仪器

Two Novel Saponins from Lysimachia capillipes

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Chinese Chemical Letters 2005年第12期16卷 1607-1610页

作者： Jing Kui TIAN Chen XIE Zhong Mei ZOU li zhen xu Shi lin YANG Deptment of Chinese Medicine Science ＆ Engineering Zhejiang University Hangzhou 310028 Institute of Medicinal Plants Development Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100094

Two new saponins named capilliposide C 1 and capilliposide D 2 were isolated from the whole plants of Lysimachia capillipes, their structures were deternuned by 1D and 2D NMR, ESIMS techniques, and chemical *** C show... 详细信息

关键词： Lysimachia capillipes triterpene saponin capilliposide C and D

Tracheobronchial intubation using flexible bronchoscopy in children with Pierre Robin sequence:Nursing considerations for complications

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World Journal of Clinical Cases 2022年第19期10卷 6464-6471页

作者： Ying-Long Ye Cai-Feng Zhang li-zhen xu Hui-Feng Fan Jun-zheng Peng Gen Lu Xiao-Yin Hu Department of Respiratory Medicine Guangzhou Women and Children’s Medical CentreGuangzhou 510623Guangdong ProvinceChina

BACKGROUND It has been shown that children with Pierre Robin sequence(PRS)have a higher risk of difficult intubation before *** mask ventilation or tracheobronchial intubation is expected to be challenging,flexible bronchoscopy(FB)is advantageous in airway safety when it is used to guide tracheobronchial intubation(TI).AIM To evaluate the complications of TI using FB in children with PRS and explore the effect of nursing services on postoperative *** One hundred and five children with PRS underwent TI using FB before early mandibular distraction *** hundred and eight children with common pneumonia who did not have a difficult airway were set as the control *** data,success rates of TI,time required for TI,number of TI attempts,and the incidence of postoperative complications were ***,the strategies used to attenuate complications were *** The success rate of TI was 100%in children with PRS,while the success rate at the first attempt in the PRS group was significantly lower than that in the control group(88.6%vs 98.2%,P=0.005).The time required for TI in the PRS group was markedly longer than that in the control group(Plications was noticeably higher in the PRS group(50/105,47.6%)than in the control group(36/108,33.3%)(P=0.034).Seven of 105 PRS children experienced laryngeal edema (LE) (6.7%), compared with one (0.9%) in the control group(P = 0.034). Out of the seven patients who had LE, all were reintubated and managed withsteroids: six recovered with inhaled steroids alone before extubated, and one was given systemiccorticosteroids before *** contributes to a high success rate of TI in children with PRS. To prevent LE, operators shouldpay more attention to catheter material, catheter lubrication and intubation time.

关键词： Clinical nursing Pediatrics Surgical nursing Patient safety Operating room

Studies on the Chemical Constituents of Lysimachia capillipes Hemsl

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Chinese Chemical Letters 1998年第12期9卷 0-0页

作者： Chen XIE li zhen xu Bao Hua ZHAO and Shi lin YANG(Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and PekingUnion Medical College, Beijing 100094) Inst. of Medicinal Plant Development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100094 China

Eight compounds were isolated from the ethanolic extracts of Lysimachia capillipes Hemsl. They were identified as capilliplactone l, capillipnin 2,β-daucosterol 3, succinic acid 4, quercetin 5, 3',4',5,5',7-pentahydroxyflavone 6, quercetin-3-O-β-D-glucopyranoside 7 and kaempferol 8 on the basis of chemical and spectral methods. Among them, 1 and 2 were new, their structures were established as all-cis-5-deoxy-pentonic acid-y-lactone and 1,2,4,5-tetrahydroxy-3-n-pentylbenzen-2,4-di-O - D-glucopyranoside through their spectral data (1HNMR, 13CNMR, DEPT, 1H-1H COSY, 1H-13C COSY, HMBC etc).

关键词： Lysimachia lysimachia capillipes, capillplactone capillipnin