pha-D-glucopyranosyl-D-ribofuranose. Vorbrüggen condensation with activated imidazole or purine gave the required beta-substituted derivatives which were further elaborated to 7 and 8, respectively. Radioligand binding assays to hepatic InsP(3) receptors and functional assays of Ca(2+) release from permeabilized hepatocytes gave a rank order of potency of the ligands 2 approximately 8 > 7 approximately
3'-O-α-
D-吡喃葡萄糖基-1-β-D-
呋喃呋喃糖基
氨基
咪唑2',3'',4''-
三磷酸(7)和3'-O-α-
D-吡喃葡萄糖基-9-beta的合成描述了-D-
呋喃呋喃核糖嘌呤2',3'',4''-
三磷酸(8),这是超强1D-肌醇1,4,5-
三磷酸受体激动剂
腺苷A(2)的两个类似物。通过改进的路线由1,2-O-异亚丙基-α-D-木
呋喃糖制备5-O-苄基-1,2-O-异亚丙基-α-D-
呋喃核糖,并与3,4-di-O偶联-乙酰基-2,6-二-O-苄基-
D-吡喃葡萄糖基二甲基
亚磷酸酯得到3',4'-二-O-乙酰基-2',5,6'-三-O-苄基-3-O- α-
D-吡喃葡萄糖基-1,2-O-异亚丙基-α-D-
呋喃呋喃糖。除去异亚丙基
缩醛并随后乙酰化得到中心二糖1,2,3',4'-四-O-乙酰基-2',5、6'-三-O-苄基-3-O-α-
D-吡喃葡萄糖基-D-
呋喃呋喃糖。用活化的
咪唑或
嘌呤进行弗布吕