A neo-clerodane diterpene, 15-hydroxy-15,16-epoxy-6alpha-neocleroda-3,13(16),14-triene-18,19:20,12-diolide, C20H22O6, showing antifeedant activity against lepidopterous pests, has been isolated from Teucrium tomentosum and characterized by NMR and X-ray crystallographic methods. The crystallographic studies reveal that the cyclohexene and cyclohexane rings adopt a half-chair and a chair conformation, respectively. The furan ring exhibits rotational disorder. The molecules in the crystal structure are stabilized by a network of O-H...O and C-H...O hydrogen bonds.
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LANZHOU UNIV,STATE KEY LAB APPL ORGAN CHEM,DEPT CHEM,LANZHOU 730000,GANSU,PEOPLES R CHINALANZHOU UNIV,STATE KEY LAB APPL ORGAN CHEM,DEPT CHEM,LANZHOU 730000,GANSU,PEOPLES R CHINA
Wang, LM
Guo, SJ
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LANZHOU UNIV,STATE KEY LAB APPL ORGAN CHEM,DEPT CHEM,LANZHOU 730000,GANSU,PEOPLES R CHINALANZHOU UNIV,STATE KEY LAB APPL ORGAN CHEM,DEPT CHEM,LANZHOU 730000,GANSU,PEOPLES R CHINA
Guo, SJ
Jia, ZJ
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LANZHOU UNIV,STATE KEY LAB APPL ORGAN CHEM,DEPT CHEM,LANZHOU 730000,GANSU,PEOPLES R CHINALANZHOU UNIV,STATE KEY LAB APPL ORGAN CHEM,DEPT CHEM,LANZHOU 730000,GANSU,PEOPLES R CHINA
Jia, ZJ
Cheng, DL
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LANZHOU UNIV,STATE KEY LAB APPL ORGAN CHEM,DEPT CHEM,LANZHOU 730000,GANSU,PEOPLES R CHINALANZHOU UNIV,STATE KEY LAB APPL ORGAN CHEM,DEPT CHEM,LANZHOU 730000,GANSU,PEOPLES R CHINA
机构:
China Pharmaceut Univ, Dept Nat Med Chem, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R ChinaChina Pharmaceut Univ, Dept Nat Med Chem, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R China
Lv, Huawei
Luo, Jianguang
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China Pharmaceut Univ, Dept Nat Med Chem, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R ChinaChina Pharmaceut Univ, Dept Nat Med Chem, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R China
Luo, Jianguang
Kong, Lingyi
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China Pharmaceut Univ, Dept Nat Med Chem, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R ChinaChina Pharmaceut Univ, Dept Nat Med Chem, State Key Lab Nat Med, Nanjing 210009, Jiangsu, Peoples R China