Hydride transfer and dihydrogen elimination from osmium and ruthenium metalloporphyrin hydrides: model processes for hydrogenase enzymes and the hydrogen electrode reaction
作者:James P. Collman、Paul S. Wagenknecht、Nathan S. Lewis
DOI:10.1021/ja00040a028
日期:1992.7
by dihydrogen loss. One-electronoxidation of the metal hydrides also resulted in dihydrogen formation. The kinetics of the oxidatively induced hydrogen evolution step from K[Ru(OEP)(THF)(H)] were examined and indicate a biomolecular mechanism in which two metal hydrides reductively eliminate one dihydrogen molecule. The rate constant was determined to be 88 +-} 14 Msup -1} ssup -1}. These reaction
Presently provided are compounds according to the formula (I) or (II), and pharmaceutical compositions comprising the compounds, wherein R
1
, R
4
, and R
5
are defined herein. Such compounds and compositions are useful for modulating an activity of indoleamine 2,3-dioxygenase; treating indoleamine 2,3-dioxygenase (IDO) mediated immunosuppression; treating a medical conditions that benefit from the inhibition of enzymatic activity of indoleamine -2,3-dioxygenase; enhancing the effectiveness of an anti-cancer treatment comprising administering an anti-cancer agent; treating tumor-specific immunosuppression associated with cancer; and treating immunosupression associated with an infectious disease.
Isocyanoalkenes, process and useful intermediates for their preparation, pharmaceutical and fungicidal preparations containing those isocyanoalkenes and the use of the fungicidal preparations in agriculture
申请人:GIST-BROCADES N.V.
公开号:EP0007672A1
公开(公告)日:1980-02-06
Isocysnoalksnes, process and useful intermediates for their preparation, pharmaceutical and fungicidal preparations containing those isocyanoalkenes and the use of the fungicidal preparations in agriculture, the isocyanoalkenes having the general formula:
wherein Rx and Ry are the same or different and each is a hydrogen atom or an alkyl, aryl or heterocyclic group and Rx and Ry together with the carbon atom to which they are attached represent a homo- or heterogeneous cydoal- kylidene, adamantylidene or cholestamtlidene group, Rw is an alkylidene group or Rw together with Rx and the carbon atom to which they are attached represent a homo- or heterogeneous cycloalkenyl group and Rz is an aryl group.
异氰基烯烃、制备它们的工艺和有用中间体、含有这些异氰基烯烃的药物和杀菌制剂以及这些杀菌制剂在农业中的用途,这些异氰基烯烃具有通式:
其中 Rx 和 Ry 相同或不同,且各自为氢原子或烷基、芳基或杂环基团,Rx 和 Ry 与它们所连接的碳原子一起代表同族或异族的亚烷基、亚金刚烷基或亚胆烷基,Rw 为亚烷基或 Rw 与 Rx 和它们所连接的碳原子一起代表同族或异族的环烯基,Rz 为芳基。
Collman, James P.; Hutchison, James E.; Wagenknecht, Paul S., Journal of the American Chemical Society, 1990, vol. 112, p. 8206 - 8208
作者:Collman, James P.、Hutchison, James E.、Wagenknecht, Paul S.、Lewis, Nathan S.、Lopez, Michel Angel、Guilard, Roger
DOI:——
日期:——
Collman, James P.; Hutchison, James E.; Lopez, Michel Angel, Journal of the American Chemical Society, 1991, vol. 113, # 7, p. 2794 - 2796
作者:Collman, James P.、Hutchison, James E.、Lopez, Michel Angel、Guilard, Roger、Reed, Robert A.