A new linker for glucuronylated anticancer prodrugs
摘要:
The synthesis, enzymatic hydrolysis and self decomposition of model glucuronylated prodrugs, incorporating a new linker with different aryl substituents, have been studied. Determination of kinetic parameters (V-max, K-m and t(1/2)) showed the important role of aromatic substitution in enzymatic recognition and linker decomposition. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis and Initial SAR Studies of 3,6-Disubstituted Pyrazolo[1,5-a]pyrimidines: A New Class of KDR Kinase Inhibitors
作者:Mark E. Fraley、William F. Hoffman、Robert S. Rubino、Randall W. Hungate、Andrew J. Tebben、Ruth Z. Rutledge、Rosemary C. McFall、William R. Huckle、Richard L. Kendall、Kathleen E. Coll、Kenneth A. Thomas
DOI:10.1016/s0960-894x(02)00525-5
日期:2002.10
synthesized and evaluated the activity of 3,6-disubstituted pyrazolo[1,5-a]pyrimidines as a newclass of KDR kinase inhibitors. Starting with screening lead 1, potency against isolated KDR was fully optimized with 3-thienyl and 4-methoxyphenyl substituents at the 6- and 3-positions (3g, KDR IC(50)=19 nM), respectively. The synthesis and SAR of these compounds are described.
A new glucuronylated prodrug of doxorubicin, potentially useful for ADEPT or PMT cancer chemotherapy, has been prepared from 4-methyl phenyl malonaldehyde. The enol ether spacer, linked via a carbamate to the 3'-amino group of doxorubicin is rapidly cleaved after beta-glucuronidase (E coli) catalyzed hydrolysis at pH 7.2 and 37 degrees C. (C) 1998 Elsevier Science Ltd. All rights reserved.
A new simple and convenient method for the synthesis of substituted 2,6,9-trioxabicyclo[3.3.1]-nona-3,7-dienes from arylmalondialdehydes
A new convenient synthesis of substituted 2,6,9-trioxabicyclo[3.3.1]-nona-3,7-dienes is described. These new 'bridged bis-dioxines' were obtained in moderate to good yields by dimerization of the corresponding arylmalondialdehydes in the presence of 0.5 equiv of TMSOTf. The structure of the nitro derivative le has been proven by X-ray crystallography. A mechanism for this reaction is proposed. (c) 2006 Elsevier Ltd. All rights reserved.
COPPOLA G. M.; FRASER J. D.; HARDTMANN G. E.; HUEGI B. S.; KATHAWALA F. G+, J. HETEROCYCL. CHEM., 1979, 16, NO 3, 545-554
作者:COPPOLA G. M.、 FRASER J. D.、 HARDTMANN G. E.、 HUEGI B. S.、 KATHAWALA F. G+