共 50 条
- [1] A new labdane-type diterpenoid from Leonurus japonicusJOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH, 2019, 21 (07) : 627 - 632Jiang, Min-Hong论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaHu, Yue论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaJiao, Lin论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaDong, Pan论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaYin, Sheng论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China Guangdong Technol Res Ctr Adv Chinese Med, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaZhao, Zhi-Min论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China Guangdong Technol Res Ctr Adv Chinese Med, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaYang, De-Po论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China Guangdong Technol Res Ctr Adv Chinese Med, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaWang, Dong-Mei论文数: 0 引用数: 0 h-index: 0机构: Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China Guangdong Technol Res Ctr Adv Chinese Med, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China
- [2] Diterpenoids from Leonurus japonicusJOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE, 2015, 59 (02): : 179 - 182Wu, Hankui论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaWang, Sensheng论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaLiu, Haijuan论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaYan, E.论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaWang, Jinjin论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaWang, Xiangbei论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaWei, Wenchao论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaXu, Zhiyong论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaSun, Shanshan论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaLi, Yan论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaLiu, Ruijin论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaLi, Gang论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R ChinaShi, Yunfeng论文数: 0 引用数: 0 h-index: 0机构: Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455000, Henan, Peoples R China
- [3] An abietane diterpenoid from Leonurus marrubiastrumPHYTOCHEMISTRY, 1998, 48 (03) : 557 - 559Malakov, PY论文数: 0 引用数: 0 h-index: 0机构: Paisij Hilendarski Univ Plovdiv, Dept Organ Chem, BG-4000 Plovdiv, BulgariaPapanov, GY论文数: 0 引用数: 0 h-index: 0机构: Paisij Hilendarski Univ Plovdiv, Dept Organ Chem, BG-4000 Plovdiv, BulgariaTomova, KN论文数: 0 引用数: 0 h-index: 0机构: Paisij Hilendarski Univ Plovdiv, Dept Organ Chem, BG-4000 Plovdiv, BulgariaRodríguez, B论文数: 0 引用数: 0 h-index: 0机构: Paisij Hilendarski Univ Plovdiv, Dept Organ Chem, BG-4000 Plovdiv, Bulgariade la Torre, MC论文数: 0 引用数: 0 h-index: 0机构: Paisij Hilendarski Univ Plovdiv, Dept Organ Chem, BG-4000 Plovdiv, Bulgaria
- [4] Glucaric acids from Leonurus japonicusFITOTERAPIA, 2015, 107 : 85 - 89Jiang, Jianshuang论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R China Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R ChinaLi, Yixiu论文数: 0 引用数: 0 h-index: 0机构: Second Affiliated Hosp Nanchang, Dept Pharm, Nanchang 330000, Peoples R China Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R ChinaFeng, Ziming论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R China Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R ChinaYang, Yanan论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R China Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R ChinaZhang, Peicheng论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R China Chinese Acad Med Sci, Peking Union Med Coll, Key Lab Bioact Subst & Resources Utilizat Chinese, Inst Mat Med,Minist Educ, Beijing 100050, Peoples R China
- [5] Sesquiterpenoids from the Herb of Leonurus japonicusMOLECULES, 2013, 18 (05) : 5051 - 5058Xiong, Liang论文数: 0 引用数: 0 h-index: 0机构: Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R China Chengdu Univ Tradit Chinese Med, Coll Pharm, Chengdu 610075, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R ChinaZhou, Qin-Mei论文数: 0 引用数: 0 h-index: 0机构: Chengdu Univ Tradit Chinese Med, Coll Pharm, Chengdu 610075, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R ChinaPeng, Cheng论文数: 0 引用数: 0 h-index: 0机构: Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R China Chengdu Univ Tradit Chinese Med, Coll Pharm, Chengdu 610075, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R ChinaXie, Xiao-Fang论文数: 0 引用数: 0 h-index: 0机构: Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R China Chengdu Univ Tradit Chinese Med, Coll Pharm, Chengdu 610075, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R ChinaGuo, Li论文数: 0 引用数: 0 h-index: 0机构: Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R China Chengdu Univ Tradit Chinese Med, Coll Pharm, Chengdu 610075, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R ChinaLi, Xiao-Hong论文数: 0 引用数: 0 h-index: 0机构: Chengdu Univ Tradit Chinese Med, Coll Pharm, Chengdu 610075, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R ChinaLiu, Juan论文数: 0 引用数: 0 h-index: 0机构: Chengdu Univ Tradit Chinese Med, Coll Pharm, Chengdu 610075, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R ChinaLiu, Zhao-Hua论文数: 0 引用数: 0 h-index: 0机构: Chengdu 1 Pharmaceuticlco Ltd, Chengdu 610031, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R ChinaDai, Ou论文数: 0 引用数: 0 h-index: 0机构: Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R China Sichuan Prov & Minist Sci & Technol, State Key Lab Breeding Base Systemat Res Dev & Ut, Chengdu 610075, Sichuan, Peoples R China
- [6] Two new glycosides from Leonurus japonicusJOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH, 2010, 12 (09) : 740 - 744Chang, Jin-Ming论文数: 0 引用数: 0 h-index: 0机构: Chung Yuan Christian Univ, Inst Chem, Tao Yuan, Taiwan Ko Da Pharmaceut Co Ltd, Tao Yuan, Taiwan Chung Yuan Christian Univ, Inst Chem, Tao Yuan, TaiwanShen, Chien-Chang论文数: 0 引用数: 0 h-index: 0机构: Natl Res Inst Chinese Med, Taipei, Taiwan Chung Yuan Christian Univ, Inst Chem, Tao Yuan, TaiwanHuang, Yu-Ling论文数: 0 引用数: 0 h-index: 0机构: Natl Res Inst Chinese Med, Taipei, Taiwan Chung Yuan Christian Univ, Inst Chem, Tao Yuan, TaiwanShieh, Bor-Jinn论文数: 0 引用数: 0 h-index: 0机构: Chung Yuan Christian Univ, Inst Chem, Tao Yuan, Taiwan Chung Yuan Christian Univ, Inst Chem, Tao Yuan, TaiwanChen, Chien-Chih论文数: 0 引用数: 0 h-index: 0机构: Hung Kuang Univ, Dept Biotechnol, Taichung Cty, Taiwan Chung Yuan Christian Univ, Inst Chem, Tao Yuan, Taiwan
- [7] Three new diterpenoids from Leonurus japonicusCHINESE CHEMICAL LETTERS, 2014, 25 (05) : 677 - 679Liu, Zhi-Ke论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China Univ Chinese Acad Sci, Beijing 100049, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R ChinaWu, Da-Rong论文数: 0 引用数: 0 h-index: 0机构: Chengdu 1 Pharmaceut Grp Co Ltd, Chengdu 610031, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R ChinaShi, Yi-Ming论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China Univ Chinese Acad Sci, Beijing 100049, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R ChinaZeng, Ting论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Shanghai Med Coll, Minist Educ, Key Lab Mol Med, Shanghai 200032, Peoples R China Fudan Univ, Shanghai Med Coll, Dept Biochem & Mol Biol, Shanghai 200032, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R ChinaLiu, Shao-Hua论文数: 0 引用数: 0 h-index: 0机构: Chengdu 1 Pharmaceut Grp Co Ltd, Chengdu 610031, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R ChinaDu, Xue论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R ChinaDang, Yong-Jun论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Shanghai Med Coll, Minist Educ, Key Lab Mol Med, Shanghai 200032, Peoples R China Fudan Univ, Shanghai Med Coll, Dept Biochem & Mol Biol, Shanghai 200032, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R ChinaXiao, Wei-Lie论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R ChinaSun, Han-Dong论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China
- [8] Leonurun, a novel labdane diterpenoid from Leonotis leonurusSOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE, 2006, 59 : 114 - 116McKenzie, J. M.论文数: 0 引用数: 0 h-index: 0机构: Univ Stellenbosch, Cent Analyt Facil, ZA-7602 Stellenbosch, South Africa Univ Stellenbosch, Cent Analyt Facil, ZA-7602 Stellenbosch, South AfricaGreen, I. R.论文数: 0 引用数: 0 h-index: 0机构: Univ Stellenbosch, Cent Analyt Facil, ZA-7602 Stellenbosch, South AfricaMugabo, P.论文数: 0 引用数: 0 h-index: 0机构: Univ Stellenbosch, Cent Analyt Facil, ZA-7602 Stellenbosch, South Africa
- [9] Labdane diterpenes from Leonurus japonicus leavesPHYTOCHEMISTRY, 2006, 67 (10) : 965 - 970Romero-Gonzalez, Roman R.论文数: 0 引用数: 0 h-index: 0机构: Univ Los Andes, Fac Ciencias, Dept Quim, Grp Quim Ecol, Merida 5101, Venezuela Univ Los Andes, Fac Ciencias, Dept Quim, Grp Quim Ecol, Merida 5101, VenezuelaAvila-Nunez, Jorge L.论文数: 0 引用数: 0 h-index: 0机构: Univ Los Andes, Fac Ciencias, Dept Quim, Grp Quim Ecol, Merida 5101, Venezuela Univ Los Andes, Fac Ciencias, Dept Quim, Grp Quim Ecol, Merida 5101, VenezuelaAubert, Lianne论文数: 0 引用数: 0 h-index: 0机构: Univ Los Andes, Fac Ciencias, Dept Quim, Grp Quim Ecol, Merida 5101, Venezuela Univ Los Andes, Fac Ciencias, Dept Quim, Grp Quim Ecol, Merida 5101, VenezuelaAlonso-Amelot, Miguel E.论文数: 0 引用数: 0 h-index: 0机构: Univ Los Andes, Fac Ciencias, Dept Quim, Grp Quim Ecol, Merida 5101, Venezuela Univ Los Andes, Fac Ciencias, Dept Quim, Grp Quim Ecol, Merida 5101, Venezuela
- [10] Three new diterpenoids from Leonurus japonicusChineseChemicalLetters, 2014, 25 (05) : 677 - 679Zhi-Ke Liu论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of SciencesDa-Rong Wu论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of SciencesYi-Ming Shi论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of SciencesTing Zeng论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of SciencesShao-Hua Liu论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of SciencesXue Du论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of Sciences State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of SciencesYong-Jun Dang论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of SciencesWei-Lie Xiao论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of Sciences State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of SciencesHan-Dong Sun论文数: 0 引用数: 0 h-index: 0机构: State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of Sciences State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of Sciences