作者:Saad H. Mahmoud、László Somsák、István Farkas
DOI:10.1016/0008-6215(94)84245-0
日期:1994.2
)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,