A General Entry to 10-Halocolchicides and 9-Haloisocolchicides
摘要:
Readily accessible 10-tosyloxycolchicide (1) and LiX (X=Cl or Br or I) in MeOH/BF3.Et2O at reflux give 10-chloro- (2), 10-bromo- (4), or 10-iodocolchicide (5), in good yields. 9-Chloro- (7) and 9-bromoisocolchidide (8) can be similarly obtained front 9-tosyloxyisocolchidide (6) and the method applies also to troponoids.
Set forth herein, inter alia, are compositions and methods for treating diseases with prodrugs. Provided herein are prodrug compositions for inhibiting the function of proteins, compositions and methods for treating diseases associated with oxidative compounds, oxidatively-sensitive prodrugs of inhibitors of metalloproteases. and methods of inhibiting metalloproteases using oxidatively-sensitive prodrugs.
The reaction of 2-arylsulfonyloxytropones and active methylene compounds
作者:T. Nozoe、K. Takase、M. Kato、T. Nogi
DOI:10.1016/s0040-4020(01)91767-3
日期:1971.1
(IV) and active methylene compounds, diethyl malonate, ethyl acetoacetate, ethyl cyanoacetate, malononitrile or cyanoacetamide, in the presence of NaOEt give 8-hydroxy-2H-cyclohepta[b]furan-2-one derivatives (V) and/or 2-amino-8H-cyclohepta[b]furan-8-one derivatives (VII), in addition to azulene derivatives (1) or 2H-cyclohepta(b]furan-2-one derivatives (II), known to be obtained by the reaction of
Set forth herein, inter alia, are compositions and methods for treating diseases with prodrugs. Provided herein are prodrug compositions for inhibiting the function of proteins, compositions and methods for treating diseases associated with oxidative compounds, oxidatively-sensitive prodrugs of inhibitors of metalloproteases. and methods of inhibiting metalloproteases using oxidatively-sensitive prodrugs.
Activation of sulfonate ester based matrix metalloproteinase proinhibitors by hydrogen peroxide
作者:Kevin B. Daniel、Jody L. Major Jourden、Kimberly E. Negoescu、Seth M. Cohen
DOI:10.1007/s00775-010-0727-x
日期:2011.2
This study details the development of matrix metalloproteinase inhibitor prodrugs (proMMPi) that are activated in the presence of reactive-oxygen species (ROS). Conventional matrix metalloproteinase inhibitors (MMPi) utilize a zinc-binding group (ZBG) that chelates to the catalytic zinc(II) ion of matrix metalloproteinases (MMPs) to inhibit their activity. To create ROS-sensitive prodrugs, sulfonate