)benzothiazoles also gave 2-(per-O-acetyl-2-deoxyhex/pent-1-enopyranosyl)benzothiazole s with DBU. 3-(Per-O-acetylhexo/pentopyranosyl)-[1,2,4]triazolo[4,3-a] pyrimidines rearranged with DBU to the corresponding acetylated 2-glycosyl-[1,2,4]triazolo[1,5-a]pyrimidines. By the reaction of 1-cyano-D-galactal with ammonium azide, 2-(3,4,6-tri-O-acetyl-2-deoxy-D-lyxo-hex-1-enopyranosyl)tetr azole was prepared
通过用
1,8-二氮杂双环[5.4.0]直接从适当的乙酰化2,6-脱
水庚烷/
己腈中除去
乙酸,制得乙酰化的1-
氰基
葡萄糖(2,6-脱
水-3-脱氧
庚烷/己-2-烯腈)非质子溶剂中的]
十一烷基-7-烯(
DBU)。乙酰化的1-
氰基-
D-半乳糖的
氰基与2-
氨基
硫酚的杂环化导致2-(3,4,6-三-O-乙酰基-2-脱氧-D-lyxo-hex-1-enopyranosyl)苯
噻唑。几种2-(全-O-乙酰基己基/戊
吡喃糖基)
苯并噻唑还与
DBU一起产生了2-(全-Oo乙酰基-2-脱氧己基/戊-1-烯
吡喃基)
苯并噻唑。
DBU将3-(Per-O-乙酰基己基/戊
吡喃糖基)-[1,2,4]三唑并[4,3-a]
嘧啶重排为相应的乙酰化2-糖基-[1,2,4]三唑并[1, 5-a]
嘧啶。通过1-
氰基-
D-半乳糖与
叠氮化
铵的反应,2-(3,4,