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Two New Ursane-type Triterpenoid Glycosides from Ilex Cornuta

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Current Medical Science 2018年第6期38卷 976-981页

作者： Hai-xia Zhan Juan li han-li ruan Peng ZhanG Hui-fang PI School of Pharmacy Tongji Medical CollegeHuazhong University of Seience and TechnologyHubei Key Laboratory of Natural Medicinal Chemistry and Resource EvaluationWuhan 430030China Department of Pharmacy Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Ilex cornuta (***)is a traditional Chinese medicine (TCM)that has been used in clinical practice for hundreds of *** order to provide more information about the chemical basis of its pharmacological effects,phytochemical investigation on the roots of L cornuta was conducted in this *** roots of the plant were firstly extracted with 95% EtOH,and then the crude was partitioned with petroleum ether,EtOAc and n-butyl *** chromatographies were employed to isolate the crude step by step and the crude was further purified by semipreparative high performance liquid chromatography (HPLC).As a result,two new triterpenoid saponins (1,2),together with 12 known compounds (3-14),were isolated from the roots of I. *** structures were determined based on nuclear magnetic resonance (NMR),mass spectrum (MS)technologies,chemical reactions as well as gas chromatography (GC).Compounds 4,6,8,11,12 and 13 were isolated from this genus for the first *** structures of compounds 1 and 2 were determined as 3β-O-α-D-xylopyranosyl-(1→3)-α-L-2-O-acetylarabinopyranosyl-(1→2)-β-D glucopyranosyl-23-hydroxyl-20α(H)-urs-12-en-28-oic acid 28-O-β-D-glucopyranosyl ester (1)and 3β-O-α-D-xylopyranosly-(1→3)-α-L-2-O-acetylarabinopyranosyl-(1→2)-β-D-glucopyranosyl-19α,23-dihydroxyl-20α(H)-urs-12-en-28-oic acid 28-O-β-D-glucopyranosyl ester(2).

关键词： Ilex cornuta aquifoliaceae triterpenoids

A new alkaloid from Lycoris aurea

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Chinese Chemical Letters 2009年第11期20卷 1319-1320页

作者： Hui Fang Pi Peng Zhang han li ruan Yong Hui Zhang han Dong Sun Ji Zhou Wu Faculty of Pharmaceutical Sciences Tongji Medical College of Huazhong University of Science and Technology Hubei Key Laboratory of Natural Medicinal Chemistry and Resources Evaluation Wuhan 430030 China

A new alkaloid was isolated from the bulbs of Lycoris aurea （L＇Herit.） Herb. Its structure was established as 3-o-ethyltazettinol through chemical and spectroscopic studies including 2D NMR.

关键词： Lycoris aurea 3-o-Ethyltazettinol

Two new ent-kaurane diterpenoids from the aerial parts of Isodon excisoides

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Chinese Chemical Letters 2014年第1期25卷 131-133页

作者： Ke Jiao Huo-Yun li Peng Zhang Hui-Fang Pi han-li ruan Ji-Zhou Wu Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation Tongji School of Pharmaceutical SciencesHuazhong University of Science and Technology

Two new ent-kaurane diterpenoids, ent-7α,14β-dihydroxykaur-16-en-15-one-20-oic acid （1） and 1,7α,12β,14β-tetrahydroxy-1,10-seco-ent-kaur-10,16-dien-15-one （2）, together with six known ones （3-8）, were isolated from the EtOAc extract of the aerial parts of lsodon excisoides. Their structures were elucidated on the basis of 1D NMR and 2D NMR analyses as well as HR-ESI-MS experiments.

关键词： lsodon excisoides ent-Kaurane Diterpenoid

Diarylheptanoids from the root bark of Juglans cathayensis

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Chinese Chemical Letters 2013年第6期24卷 521-523页

作者： Juan li Jia-Xiang Sun Heng-Yi Yu Zu-Yu Chen Xiao-Ya Zhao han-li ruan Department of Pharmacy Tongji Hospital Affiliated Tongji Medical CollegeHuazhong University of Science and Technology School of Pharmacy Tongji Medical College of Huazhong University of Science and Technology Hubei Entry-Exit Inspection and Quarantine Bureau

A new diarylheptanoid glucoside,（8R,9R）-17-methoxy-2-oxatricyclo[13.***.2.1^（3.7）]icosa-l（17）,3（20）,4,6, 15,18-hexaene-4,9,10-triol-9-O-β-D-glucopyranoside（1）,namely jugcathayenoside,together with two known diarylheptanoids,（＋）-galeon（2） and 4-hydroxy-17-methoxy-2-oxatricyclo[13.***.2.1^（3,7） ]icosa-1（17）,3（20）,4,6,15,18-hexaene-9-one（3）,were isolated from the root bark of Juglans cathayensis. Their structures were elucidated on the basis of extensive spectroscopic data analysis.

关键词： Juglans cathayensis Diarylheptanoid glucoside Jugcathayenoside

A new cycloartane triterpenoid from the leaves and stems of Fritillaria hupehensis

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Chinese Chemical Letters 2007年第4期18卷 418-420页

作者： Hui Fang Pi Peng Zhang Tian Zhu han li ruan Yong Hui Zhang han Dong Sun Ji Zhou Wu Faculty of Pharmaceutical Sciences Tongji Medical College of Huazhong University of Science and Technology Wuhan 430030 China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Kunming 650204 China

A new triterpenoid has been isolated from the leaves and stems of Fritillaria hupehensis Hsiao et K.C. Hsia. Its structure was established as （2329-9,19-cycloart-23-ene-3α,25-diol 1 through chemical and spectroscopi... 详细信息

关键词： Fritillaria hupehensis Cycloartane triterpenoids (23Z)-9,19-Cycloart-23-ene-3α,25-diol

A new hopane triterpenoid from Saxiglossum angustissimum

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Chinese Chemical Letters 2008年第7期19卷 835-836页

作者： Hui Fang Pi Zhi Hong Zhong han li ruan Peng Zhang Yong Hui Zhang Ji Zhou Wu Faculty of Pharmaceutical Sciences Tongji Medical College of Huazhong University of Science and Technology Wuhan 430030 PR China

A new hopane triterpenoid, hopane 22, 29-diol-29-formate （1）, has been isolated from the whole herbs of Saxiglossum angustissimum （Cries.） Ching and its structure has been successfully determined on the basis of s... 详细信息

关键词： Saxiglossum angustissimum Hopane Hopane-22 29-Diol-29-formate

A solution using only electromagnetic coils for relative pose control in satellite docking

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Chinese Journal of Aeronautics 2024年第3期37卷 258-281页

作者： Guangzheng ruan lijian WU Bo WANG Yaobing WANG Runqi han College of Electrical Engineering Zhejiang UniversityHangzhou 310012China Beijing Institute of Spacecraft System Engineering Beijing 100094China

This paper proposes an electromagnetic coil topology and its control strategy,which can be incorporated into the electromagnetic docking device to achieve relative pose control in satellite *** target satellite has a main coil;the chaser satellite possesses a main coil of the same size accompanied by six and four evenly arranged secondary coils inside and outside the main coil,*** coil on the target satellite is DC energized,while the currents in the coils of the chaser satellite are *** remove the coupling between the pitch/yaw torque and translational force,the internal and external secondary coils of the chaser satellite interact with the main coil of the target satellite to perform the control of relative pitch/yaw and relative translation,respectively,so relative pose control can be *** torque and force vectors exerted by the secondary coils of the chaser satellite are synthesized onto the pitch and yaw axes of the body *** to their spatial composition relationship,the formulas are proposed,which obtain the magnetic moment vectors of the coils from the set torques and *** controllers regulating pitch/yaw,translation,and distance utilize a three-loop cascaded structure that consists of an outer position loop,a middle velocity loop and an inner current *** control strategy is verified by dynamics simulation.

关键词： Electromagnetic docking 6 degree of freedom Relative pose control Coil array Far field model Motion decoupling

MSC-YOLO:Improved YOLOv7 Based on Multi-Scale Spatial Context for Small Object Detection in UAV-View

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Computers, Materials & Continua 2024年第4期79卷 983-1003页

作者： Xiangyan Tang Chengchun ruan Xiulai li Binbin li Cebin Fu School of Computer Science and Technology Hainan UniversityHaikou570228China Hainan Blockchain Technology Engineering Research Center Hainan UniversityHaikou570228China School of Cyberspace Security(School of Cryptology) Hainan UniversityHaikou570228China

Accurately identifying small objects in high-resolution aerial images presents a complex and crucial task in thefield of small object detection on unmanned aerial vehicles(UAVs).This task is challenging due to variations inUAV flight altitude,differences in object scales,as well as factors like flight speed and motion *** enhancethe detection efficacy of small targets in drone aerial imagery,we propose an enhanced You Only Look Onceversion 7(YOLOv7)algorithm based on multi-scale spatial *** build the MSC-YOLO model,whichincorporates an additional prediction head,denoted as P2,to improve adaptability for small *** replaceconventional downsampling with a Spatial-to-Depth Convolutional Combination(CSPDC)module to mitigatethe loss of intricate feature details related to small ***,we propose a Spatial Context Pyramidwith Multi-Scale Attention(SCPMA)module,which captures spatial and channel-dependent features of smalltargets acrossmultiple *** module enhances the perception of spatial contextual features and the utilizationof multiscale feature *** the Visdrone2023 and UAVDT datasets,MSC-YOLO achieves remarkableresults,outperforming the baseline method YOLOv7 by 3.0%in terms ofmean average precision(mAP).The MSCYOLOalgorithm proposed in this paper has demonstrated satisfactory performance in detecting small targets inUAV aerial photography,providing strong support for practical applications.

关键词： Small object detection YOLOv7 multi-scale attention spatial context

Spontaneous coronary artery rupture after lung cancer surgery:A case report and review of literature

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World Journal of Cardiology 2024年第2期16卷 92-97页

作者： Ying-Ding ruan Jian-Wei han Department of Thoracic Surgery The First People's Hospital of JiandeJiande 311600Zhejiang ProvinceChina

BACKGROUND Spontaneous coronary artery rupture(SCAR)is a rare and life-threatening complication after lung cancer *** present a case of SCAR following left upper lobectomy,successfully managed through emergency thoracotomy and coronary artery *** SUMMARY A 61-year-old male patient underwent left upper lobectomy and mediastinal lymph node dissection for lung *** surgery was performed using singleport video-assisted thoracoscopic surgery,and there were no observed complications during the ***,19 h after surgery,the patient experienced chest discomfort and subsequently developed severe symptoms,including nausea,vomiting,and a drop in blood *** measures were taken,leading to the diagnosis of *** patient underwent emergency thoracotomy and coronary artery ligation,successfully stopping the bleeding and stabilizing the *** postoperative complications,the patient made a successful recovery and was discharged from the *** SCAR is a rare but life-threatening complication following lung cancer *** thoracotomy has been shown to be a life-saving measure,while stenting is not the preferred initial approach.

关键词： Spontaneous coronary artery rupture Lung cancer Surgery Case report