公开(公告)号：US4874852A

公开(公告)日：1989-10-17

申请号：US321809

申请日：1989-03-10

申请人： Keisuke Kinomura ,  Sadaya Kitazawa ,  Yasushi Takata ,  Toshiyuki Sakakibara

发明人： Keisuke Kinomura ,  Sadaya Kitazawa ,  Yasushi Takata ,  Toshiyuki Sakakibara

IPC分类号： B01J23/16 ,  B01J27/188 ,  B01J27/198 ,  C07H15/04 ,  C07H15/18

CPC分类号： C07H15/18 ,  B01J23/16 ,  B01J27/188 ,  B01J27/198 ,  C07H15/04

摘要： Disclosed are a glycosidation catalyst comprising at least one of heteropoly acids represented by the formulaH.sub.a X.sub.p M.sub.q O.sub.r .multidot.bH.sub.2 Owherein X is P, As, Si or Ge, M is at least one species selected from the group consisting of Mo, W and V, a is 3 4 or 6, b is an integer of 0 to 30, p is 1 or 2, q is 12 or 18, and r is 40 or 62, with the proviso that when X is P or As, a is 3 or 6; when X is Si or Ge, a is 4; and further (1) when X is P or As and a is 3, or when X is Si or Ge and a is 4, M is at least one species selected from the group consisting of Mo, W and V, p is 1, q is 12 and r is 40; and (2) when X is P or As and a is 6, M is Mo or W, p is 2, q is 18 and r is 62, and a process for preparing a glycoside derivative by using said catalyst.