N-Amino-1,8-naphthalimide was used as a protectinggroup and a reagent to selective synthesis of various mono-N-substituted hydrazines and hydrazides. In all these reactions, the protecting reagent N-amino-1,8-naphthalimide was easily regenerated in good yields by the hydrazinolysis. All these transformations showed good functional-group tolerance and can be used for large scale C−N cross-coupling
[EN] STRAIGHT-CHAIN AND BRANCHED-CHAIN LIPID COMPOUNDS AS SELECTIVE INHIBITORS OF CYCLOOXYGENASE-2, ANTI-INFLAMMATORY AGENTS, AND ANTI-CANCER AGENTS<br/>[FR] COMPOSES LIPIDIQUES A CHAINE RAMIFIEE ET A CHAINE LINEAIRE UTILISES EN TANT QU'INHIBITEURS SELECTIFS DE LA CYCLOOXYGENASE-2, AGENTS ANTI-INFLAMMATOIRES ET AGENTS ANTICANCEREUX
申请人:YANG ZHENHUA
公开号:WO2005014528A1
公开(公告)日:2005-02-17
Unique branched-chain lipid compounds are disclosed as selective COX-2 inhibitors, which are derivatives of a branched-chain fatty amine or a branched-chain fatty amide, or a pharmaceutically acceptable salt thereof. The compounds can be used for osteoarthritis and rheumatoid arthritis as anti-inflammatory agents, in addition to treating and preventing cancer. Straight-chain analogs of the branched-chain lipid compounds provide similar uses.
Solution phase synthesis of imidazo[1,2-b]pyrazol-2-one, an interesting 5,5-fused heterocyclic ring system
作者:Benjamin E. Blass、Anil Srivastava、Keith R. Coburn、Amy L. Faulkner、John J. Janusz、James M. Ridgeway、William L. Seibel
DOI:10.1016/j.tetlet.2003.10.177
日期:2004.1
The solution phase synthesis of a series of imidazo[1,2-b]pyrazol-2-ones, a fused 5,5-ring system, based on diverse set of hydrazino acids and malononitriles is described. The method involves formation of 5-aminopyrazoles followed by intra-molecular cyclodehydration.
Discovery of the Azaserine Biosynthetic Pathway Uncovers a Biological Route for α‐Diazoester Production
作者:Devon Van Cura、Tai L. Ng、Jing Huang、Harry Hager、John F. Hartwig、Jay D. Keasling、Emily P. Balskus
DOI:10.1002/anie.202304646
日期:2023.7.10
Discovery of the biosynthetic gene cluster for the α-diazoester natural product azaserine is reported. Isotope feeding and biochemical experiments implicate generation of a hydrazonoacetic acid intermediate that is oxidized and transferred to l-serine. This pathway represents a distinct biosynthetic strategy for diazo formation.