NOVEL SYNTHESIS OF<i>seco</i>TYPE OF ACYCLO<i>C</i>-NUCLEOSIDES OF 1,2,4-TRIAZOLE AND 1,2,4-TRIAZOLO[3,4-b][1,3,4]THIADIAZINE
作者:El Sayed H. El Ashry、Laila F. Awad
DOI:10.1081/ncn-100001440
日期:2001.2.26
-mercapto-1,2,4-triazole (12) with phenacylbromide (11) afforded the corresponding 3-(D-gluco-, D-galacto-pentitol-1-yl) and 3-(D-glycero-D-gulo-hexitol-1-yl)-6-phenyl-7H-1,2,4- triazolo[3,4-b][1,3,4] thiadiazines (15, 16, and 17). Acetylation of 15–17 gave the penta- and hexa-O-acetyl derivatives 18–20, respectively. The structures were confirmed by using 1H, 13C, and 2D NMR spectra, DQFCOSY, HMQC
Seco C-核苷3-(1,2,3,4,5-penta-O-乙酰基-D-葡萄糖-和D-半乳糖-戊糖醇-1-基)-1H-1,2,4-三唑(在一锅中通过对4-氨基-3-(D-葡萄糖和D-半乳糖-戊糖醇-1-基)-5-巯基-1,2,4-三唑( 1和2),分别在正磷酸中使用亚硝酸钠,然后进行乙酰化。1,2,和4-氨基-3-(D-甘油-D-果糖己糖醇-1-基)-5-巯基-1,2,4-三唑(12)与苯乙溴(11)的缩合反应相应的3-(D-葡萄糖基,D-半乳糖基戊糖醇-1-基)和3-(D-甘油-D-gulo-己糖醇-1-基)-6-苯基-7H-1,2,4- triazolo [3,4-b] [1,3,4]噻二嗪(15、16和17)。乙酰化15-17分别生成五-和六-O-乙酰基衍生物18-20。通过使用1H,13C和2D NMR光谱,DQFCOSY,HMQC和HMBC实验来确认结构。