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Chinese Chemical Letters 2008年第8期19卷 893-896页

作者： jin hui yang Xuan Zhang Wan Yi Liu Key Laboratory of Energy Sources ＆ Engineering Ningxia University Yinchuan 750021 China School of Chemistry and Chemical Engineering Ningxia University Yinchuan 750021 China

A simple, green and efficient method for the DHP protection of various alcohols and phenols and the subsequent removal of the corresponding protective group in the presence of a catalytic amount of the activated carbo... 详细信息

关键词： Tetrahydropyranylation Deprotection THP ethers Activated carbon

First total synthesis of (±)-abyssinoflavanone V

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Chinese Chemical Letters 2008年第6期19卷 658-660页

作者： jin hui yang Yan Min Zhao Cong Bin Ji Key Laboratory of Energy Sources and Chemical Engineering of Ningxia Ningxia University Yinchuan 750021 China

The total synthesis of （±）-abyssinoflavanone V was first achieved through C-prenylation, selective protection of phenolic hydroxyl group, aldol condensation, cyclization and deprotection starting from cheap 4-hydroxybenzaldehyde and 2,4,6- trihydroxyacetophenone, with total yield 24%. All structures of new compounds were confirmed by IR, 1^H NMR and MS.

关键词： Abyssinoflavanone V Flavanone Isoprenylflavanoids Total synthesis

A Novel Plasticizer for the Preparation of Thermoplastic Starch

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Chinese Chemical Letters 2006年第1期17卷 133-136页

作者： jin hui yang Jiu Gao YU Xiao Fei MA School of Science Tianjin University Tianjin 300072

in this paper, ethylenebisformamide was synthesized and used as a novel plasticizer for cornstarch to prepare thermoplastic starch （TPS）. FT-IR expressed that ethylenebisformamide formed stronger and stable hydrogen bond with starch molecules compared to the native cornstarch. X-ray diffraction （XRD） showed that the typical A-style crystallinity in the native starch has been destructed. By scanning electron microscope （SEM） native cornstarch granules were proved to transfer to a homogeneous system. After being stored for one week at RH=33%, the mechanical properties of EPTPS was also studied. The elongation reached to 264% utmost. As a novel plasticizer, ethylenebisformamide would be practical to extend TPS application scopes.

关键词： Thermoplastic starch ethylenebisformamide novel plasticizer.

Clonal Selection Based Memetic Algorithm for Job Shop Scheduling Problems

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Journal of Bionic Engineering 2008年第2期5卷 111-119页

作者： jin-hui yang Liang Sun Heow Pueh Lee Yun Qian Yan-chun Liang College of Computer Science and Technology Jilin University Key Laboratory of Symbol Computation and Knowledge Engineering of Ministry of Education Changchun 130012 P. R. China Institute of High Performance Computing Singapore 117528 Singapore Department of Mechanical Engineering National University of Singapore Singapore 117576 Singapore Institute of Electric and Information Engineering Beihua University Jilin 13202 l P. R. China

A clonal selection based memetic algorithm is proposed for solving job shop scheduling problems in this paper. In the proposed algorithm, the clonal selection and the local search mechanism are designed to enhance exploration and exploitation. In the clonal selection mechanism, clonal selection, hypermutation and receptor edit theories are presented to construct an evolutionary searching mechanism which is used for exploration. In the local search mechanism, a simulated annealing local search algorithm based on Nowicki and Smutnicki＇s neighborhood is presented to exploit local optima. The proposed algorithm is examined using some well-known benchmark problems. Numerical results validate the effectiveness of the proposed algorithm.

关键词： job shop scheduling problem clonal selection algorithm simulated annealing global search local search

Geodynamics of decratonization and related magmatism and mineralization in the North China Craton

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Science China Earth Sciences 2021年第9期64卷 1409-1427页

作者： jin-hui yang Lei XU jin-Feng SUN Qingdong ZENG Ya-Nan ZHAO Hao WANG Yu-Sheng ZHU State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

The North China Craton(NCC)experienced strong destruction(i.e.,decratonization)during the Mesozoic,which triggered intensive magmatism,tectonism and thermal events and formed large-scale gold and other metal deposits in the eastern part of the ***,how the decratonization controls the formation and distribution of large-scale of gold and other metal deposits is not very *** on a large number of published data and new results,this paper systematically summarizes all the data for the rock assemblages,chronology,geochemistry and petrogenesis of Mesozoic magmatic rocks,as well as for the mineralizing ages of gold and other metal deposits and the evolution of the Mesozoic basins in the eastern *** results are used to restore the extensional rates of Mesozoic to Cenozoic basins and the strike-slip distance of the Tanlu Fault,to ascertain the location of the Paleo-Pacific plate subduction zones during the Mesozoic to Cenozoic,and to reconstruct the temporal and spatial distribution of Mesozoic gold and other metal deposits and magmatic rocks in the eastern *** is obtained that the magmatism and mineralization in the eastern NCC westward migrate from east to west during the Early to Middle Jurassic,but they eastward migrate from west to east during the Early *** metallogenesis of these deposits is genetically related to magmatism,and the magmas provided some ore-forming materials and fluids for the generation of metal *** geodynamic mechanism of decratonization and related magmatism and mineralization is proposed,i.e.,the westward low-angle subduction of the Paleo-Pacific slab beneath the NCC formed continental magmatic arc with plenty of porphyry Cu-Mo-Au deposits in the Jurassic,similar to the Andean continental arc in South *** mantle wedge was metasomatized by the fluids/melts derived from the subducting slab,laying a material foundation for hydrothermal mineralization in the Early *** the rollback of the

关键词： Decratonization Large-scale gold mineralization Mesozoic magmatism Geodynamics North China Craton

First total synthesis of (±)-malaysianone A and (±)-tanariflavanones B

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Chinese Chemical Letters 2013年第11期24卷 1027-1029页

作者： jin-hui yang Bing-Bing Chen Yi-Min Xie Yao Feng Xiao-Qin Ma State Key Laboratory Cultivation Base of Natural Gas Conversion Ningxia University

A concise approach for the frst total synthesis of two naturally occurring flavanoids,（）-malaysianone A（1）and（）-tanariflavanones B（2）,has been accomplished with total yields of 12.9%and 10.4%,*** key steps were regioselective deprotection and regioselective synthesis of 5-formaldehyde-8-hydroxy-2-[40-methyl-30-penteneyl]-dihydro-1-benzopyran（8）.

关键词： Malaysianone A Tanariflavanones B Total synthesis Flavanoids

Late Paleozoic to early Mesozoic volcanic-sedimentary history of the southeastern margin of the Central Asian Orogenic Belt: Timing of uplift of the Inner Mongolia paleo-uplift

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Science China Earth Sciences 2024年

作者： Wenxing HAO jin-hui yang Guang ZHU State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences School of Resource and Environmental Engineering Hefei University of Technology

The Kulun region is located in the eastern Bainaimiao arc belt on the southeastern margin of the Central Asian Orogenic Belt（CAOB）, adjacent to the North China Craton（NCC） to the south. This region records the closure of the PaleoAsian Ocean during the Paleozoic to early Mesozoic and is key to study the tectonic evolution of the northern margin of the *** conducted zircon U-Pb geochronology and Hf isotope analysis of volcanic-sedimentary and intrusive rocks in the Kulun region. The volcanic-sedimentary rocks were previously assigned an early Carboniferous age, but include volcanic rocks with ages of 267–266 Ma and sedimentary rocks with youngest detrital zircon age peaks of 265–244 Ma, which were intruded by a granite with an age of 242 Ma. This indicates that these rocks are actually middle Permian to Middle Triassic in age（267–242Ma） and correspond to the Qingfengshan and Liujiagou formations. Moreover, two volcanic rock samples have high εHf（t） values（+1.6 to +16.1） and relatively young two-stage Hf model ages（1095–327 Ma）, indicating their sources associated with the CAOB. The age spectra and Hf isotopic characteristics of detrital zircons from the sedimentary rocks suggest that, during the middle Permian to Middle Triassic, the sedimentary provenance in the Kulun region was mainly the CAOB. However, by the Early Jurassic, the provenance changed to the NCC（i.e., the Inner Mongolia Paleo-uplift, IMPU）. This result, combined with the development of a series of conglomerates on the northern margin of the NCC in the Late Triassic（i.e., Xingshikou, Xiaoyingzi,and Xiaohekou formations）, indicates the Kulun region experienced an abrupt change in paleogeography during the Late Triassic, with the IMPU undergoing significant uplift and thus becoming the main sediment source in the Kulun region. Based on the Late Triassic alkaline igneous belt（235–215 Ma） in the IMPU, we speculate that this uplift was caused by detachment of the southward-subducting Paleo-Asian oceanic

关键词： Central Asian Orogenic Belt the North China Craton Zircon geochronology Hf isotopes Inner Mongolia Paleouplift

First total synthesis of ocimarin

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Chinese Chemical Letters 2010年第10期21卷 1165-1166页

作者： jin hui yang Yun Feng Li Cong Bin Ji Shi Zhi Jiang Wan Yi Liu Key Laboratory of Energy Sources & Engineering Ningxia University Yinchuan 750021 China School of Chemistry and Chemical Engineering Ningxia University Yinchuan 750021 China

A facile approach for the first synthesis of ocimarin, naturally occurring coumarins, was developed by employing a cerium （III） chloride heptahydrate-catalyzed Pechmann condensation of phenols and β-keto esters in a solvent-free system as key step, by which ocimarin was achieved by three steps starting from acetylacetic ether and resorcinol with total yield 23.2%. All structures of new compounds were confirmed by IR, ^1H NMR and MS.

关键词： Coumarins Ocimarin CeCl3.7H2O Total synthesis

First total synthesis of four natural prenylated flavonoids

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Chinese Chemical Letters 2012年第12期23卷 1375-1377页

作者： jin hui yang Wu Biao Zuo Dong Dong Guo Jun Shan Luo Wen Qian Huang State Key Laboratory Cultivation Base of Natural Gas Conversion Ningxia University

A facile approach for the first total synthesis of prenylated flavonoids, （±）-abyssinone-VI-4-O-methyl ether 1, （±）-abyssinone- IV-4＇-O-methyl ether 2, （±）-abyssinone-V-4＇-O-methyl ether 3 and （±）-sigmoidin E 4 has been described. The key intermediate 4-hydroxy-3,5-di-（3-methylbut-2-enyl）benzaldehyde 6 was also first synthesized that features regioselective prenylation of 4-hydroxybenzaldehyde and crystallizing with petroleum ether from the reaction mixture by freeze-out effect.

关键词： Prertylated flavonoid (±)-Abyssinone-VI-4-O-methyl ether (±)-Abyssinone-IV-4'-O-methyl ether (±)-Abyssinone-V-4t-O-methylether (~)-Sigmoidin E Total synthesis

First total synthesis of (±)-puyanin and (±)-4'-O-methylbonannione

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Chinese Chemical Letters 2010年第11期21卷 1267-1269页

作者： jin hui yang Yu Heng Zhang Hong Jun Li Shi Zhi Jiang Yun Feng Li Key Laboratory of Energy Sources and Chemical Engineering of Ningxia Ningxia University Yinchuan 750021 China

A facile approach for the first total synthesis of two naturally occurring geranylated flavonoids,（±）-puyanin 1 and（±）-4＇-O- methylbonannione 2 has been obtained with total yield 27%and 21%,*** key steps were regioselective cyclization of geranylated trihydroxychalcone and regioselective geranylation of 2,4,6-trihydroxyacetophenone.

关键词： Puyanin 4'-O-Methylbonannione Flavanone Geranylated flavonoids Total synthesis