Functionalized 2-Hydrazinobenzothiazole with Isatin and Some Carbohydrates under Conventional and Ultrasound Methods and Their Biological Activities
作者:Khadija O. Badahdah、Hamida M. Abdel Hamid、Sawsan A. Noureddin
DOI:10.1002/jhet.1986
日期:2015.1
action of glacial acetic acid. In addition, the reaction of 2‐hydrazinobenzothiazole (1) with d‐glucose and d‐arabinose in the presence of acetic acid yielded the hydrazones 10a,10b, respectively. Acetylation of compound 10b gave compound 11b. On the other hand, compound 13 was obtained by the reaction of compound 1 with gama‐d‐galactolactone (12). Acetylation of compound 13 with acetic anhydride in pyridin
在3-(苯并噻唑-2-基肼基)-1,3-二氢吲哚-2-酮(2)上进行了一些化学反应。已实现3-(苯并噻唑-2-基肼基)-1-烷基-1,3-二氢吲哚-2-一3a,3b,3c。在K 2 CO 3存在下,化合物2与溴乙酸乙酯反应,得到未环化的产物4。化合物2与苯甲酰氯反应,得到二苯甲酰基衍生物5。用吡啶中的乙酸酐将化合物2平滑地乙酰化,得到二乙酰基衍生物6b。而且,当化合物4与甲基肼反应,得到二酰肼衍生物7,而该化合物与水合肼的肼解反应得到一酰肼衍生物8。 N-(苯并噻唑-2-基-N ′-(3-氧代-3,4-二氢-2 H -1,2,4-三氮杂芴-9-亚乙基)肼基]肼基乙酸乙酯(9)是通过在冰醋酸的作用下将化合物8闭环制得的;此外,在乙酸存在下2-肼基苯并噻唑(1)与d-葡萄糖和d-阿拉伯糖的反应生成了10a,10b, 分别。化合物10b的乙酰化得到化合物11b。在另一方面,化合物13是由化合物的反应获得1与gama-