专利号:US-2006089405-A1 优先权日:2004-10-21 标 题 :Asymmetric synthesis of dihydrobenzofuran derivatives 发明人:ZHOU DAHUI; STACK GARY P; GONTCHAROV ALEXANDER V 权利人:WYETH CORP 摘要:This invention concerns a process for the preparation of benzofuran derivatives. In some aspects, these compounds are of formula I: n n nwherein each of R 1 , R 2 , R 3 , and R 4 is as defined herein.
专利号:WO-2006047288-A2 优先权日:2004-10-21 标 题:Asymmetric synthesis of dihydrobenzofuran derivatives
专利号:EP-1802598-A2 优先权日:2004-10-21 标 题:Asymmetric synthesis of dihydrobenzofuran derivatives