2-Substituted 3-(aminooxy)propanamines as inhibitors of ornithine decarboxylase: synthesis and biological activity
摘要:
1-Amino-3-(aminooxy)-2-propanol (6a) has been synthesized and found to inhibit rat liver ornithine decarboxylase (ODC) with an IC50 in the nanomolar range. Compound 6a served as a basis for the design of new enzyme inhibitors, which led to the identification of 3-(aminooxy)-2-fluoropropanamine (15) as a new powerful enzyme blocker. Compound 15 inhibited ODC at 3 times lower concentrations than 6a and 3-(aminooxy)propanamine (APA), and it was superior to APA as an antiproliferative agent in inhibiting the growth of human T24 bladder carcinoma cells in vitro.
TRIFLUOROMETHYLTHIOCOPPER CATALYZED OXIRANE RING OPENING
作者:S. Munavalli、D. K. Rohrbaugh、H. D. Durst
DOI:10.1080/10426500490466247
日期:2004.8
Trifluoromethylthiocopper has been found to catalyze the opening of the epoxide ring and to furnish not-so-easily accessible novel trifluoromethylthiolated α-hydroxy compounds. This communication presents the mechanism of the formation of the various compounds and their mass spectral data.
Verbindungen der Formel I
worin R₁, R₂, R₃ und X die in der Beschreibung angegebenen Bedeutungen haben, weisen wertvolle pharmazeutische Eigenschaften auf und sind insbesondere gegen Tumoren wirksam. Sie werden in an sich bekannter Weise hergestellt.
式 I 的化合物
其中 R₁、R₂、R₃ 和 X 的含义在描述中给出。它们以已知的方式生产。
2-Substituted 3-(aminooxy)propanamines as inhibitors of ornithine decarboxylase: synthesis and biological activity
1-Amino-3-(aminooxy)-2-propanol (6a) has been synthesized and found to inhibit rat liver ornithine decarboxylase (ODC) with an IC50 in the nanomolar range. Compound 6a served as a basis for the design of new enzyme inhibitors, which led to the identification of 3-(aminooxy)-2-fluoropropanamine (15) as a new powerful enzyme blocker. Compound 15 inhibited ODC at 3 times lower concentrations than 6a and 3-(aminooxy)propanamine (APA), and it was superior to APA as an antiproliferative agent in inhibiting the growth of human T24 bladder carcinoma cells in vitro.
Regioselectivity of the ring opening of propene oxides bearing electron-withdrawing substituents at the methyl group with Olah's reagent
作者:Rolf Skupin、Günter Haufe
DOI:10.1016/s0022-1139(98)00270-x
日期:1998.11
The regiochemistry of the hydrofluorination of terminal epoxides with Olah's reagent (Py·9HF) is dependent on the electron-withdrawing character of the β-substituents. Phenoxy ethers with different substitution patterns of the aromatic ring and several N-heterocycles were examined as β-substituents.