通过1,3-偶极环加成反应 迅速进入氨基酸衍生的各种3,4-二氢吡嗪和二氢[1,2,3]三唑并[1,5- a ]吡嗪†
摘要:
通过分子内1,3-高效,通用和实用地合成各种3,4-二氢吡嗪,6,7-二氢-[1,2,3]三唑并吡嗪和7,8-二氢-[1,2,3]三唑并二氮杂pine描述了从氨基酸衍生的常见中间体以高收率进行偶极环加成。此外,在此方法中,还可以通过一锅获得光学活性的3-芳基取代的6,7-二氢-[1,2,3]三唑并[1,5- a ]吡嗪在钯-铜共催化体系中的应用。工作。容易获得的基材和操作简便性使该工艺适合于进一步探索。
Antibody-mediated disruption of quorum sensing in bacteria
申请人:Janda Kim D.
公开号:US09394371B2
公开(公告)日:2016-07-19
The invention provides an immunogenic molecular entity, a supramolecular assembly, and an antibody that can be used to inhibit Gram-positive bacterial quorum sensing, prevent infection or development of a disease condition associated with a Gram-positive bacterial infection. The invention also provides methods of inhibiting Gram-positive bacterial quorum sensing, and methods of preventing infection or development of a disease condition associated with a Gram-positive bacterial infection.
A practical and efficient regioselective synthesis of several newchiral 4,5,6,7-tetrahydro[1,2,3]triazolo[1,5-a]pyrazines is described from α -amino acid derivatives following intramolecular 'click' reaction as the key step. The method obviates product -purification; to obtain the pure triazole products, only the solvent needs to be evaporated.