专利号:US-6376676-B1 优先权日:1993-06-30 标题 :Intermediates in the synthesis of (±)-camptothecin and related compounds and synthesis thereof 发明人:CURRAN DENNIS P; LIU HUI 权利人:UNIV PITTSBURGH 摘要:The present invention provides a short, convergent total synthesis of novel intermediates in the synthesis of (±)-camptothecin and related compounds. The present synthesis scheme includes a novel 4+1 radical annulation followed by another cyclization to simultaneously assemble rings B and C of the camptothecin compound. The present invention also provides novel chemical intermediates for such 4+1 radical annulations.
专利号:US-6252079-B1 优先权日:1993-06-30 标 题 :Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof 发明人:CURRAN DENNIS P; BOM DAVID 权利人:UNIV PITTSBURGH 摘要:The present invention provides a short, convergent total synthesis of irinotecan and derivative compounds which comprises of a novel 4+1 radical annulation wherein the precursoris reacted with an aryl isonitrile having the formulawherein X is Br or I, and R4 is an alkyl group, an allyl group, a propargyl group or a benzyl group, and R16 is H, a C1-C6 alkoxy group, agroup wherein p is an integer between 4 and 12, or a C1-C12 acyclic dialkylamino group. The present invention also provides novel chemical intermediates for such 4+1 radical annulations.
专利号:US-6982333-B2 优先权日:1993-06-30 标 题:Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof 发明人:CURRAN DENNIS P; JOSIEN HUBERT; KO SUNG BO 权利人:UNIV PITTSBURGH 摘要:The present invention provides a short, convergent total synthesis of camptothecin and related compounds which consists of a novel 4+1 radical annulation. The present invention also provides novel chemical intermediates for such 4+1 radical annulations.
专利号:US-2004063947-A1 优先权日:1993-06-30 标 题:Novel intermediates in the synthesis of camptothecin and related compounds and synthesis thereof
专利号:US-6211371-B1 优先权日:1993-06-30 标 题:Intermediates in the synthesis of camptothecin and related compounds and synthesis thereof
专利号:US-6239278-B1 优先权日:1993-06-30 标 题 :Intermediates in the synthesis of (±)-camptothecin and related compounds and synthesis thereof