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›› 2011, Vol. 31 ›› Issue (1): 1-8.

• 研究报告 •     Next Articles

Synthesis and Herbicidal Activity of 5-Dehydroabietyl- 1,3,4-thiadiazole Derivatives

DUAN Wen-gui1, DUAN Wen-gui1, LI Xing-ren1,2, MA Xian-li1, MO Qi-jin1, XU Xue-tang1   

  1. 1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;2. College of Pharmacy, Guilin Medical University, Guilin 541004, China
  • Received:2010-07-29 Revised:1900-01-01 Online:2011-02-28 Published:2011-02-28

Abstract: In order to search for novel compounds with higher biological activity, a series of new dehydro-abietic acid derivatives bearing 1,3,4-thiadiazole moieties were designed and synthesized. Eight title compounds of 5-dehydroabietyl-2-substituted amino-1,3,4-thiadiazoles 5(a-h) were synthesized by the cyclization of 1-dehydroabietacyl-4-substituted thiosemicarbazides 4(a-h) under the catalysis of phosphoric acid. All the title compounds were analyzed and characterized by means of IR, UV, EI-MS,1HNMR,13CNMR, and elemental analysis. The preliminary bioassay showed that all these title compounds exhibited excellent growth inhibition against rape(Brassica campestris) and a certain inhibition against barnyard grass Echinochloa crusgalli(L.).

Key words: dehydroabietic acid, 4-thiadiazole, synthesis, herbicidal activity

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