Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\24900682
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 ACS+Med+Chem+Lett
2013 ; 4
(4
): 381-6
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Orally active fumagillin analogues: transformations of a reactive warhead in the
gastric environment
#MMPMID24900682
Arico-Muendel CC
; Blanchette H
; Benjamin DR
; Caiazzo TM
; Centrella PA
; DeLorey J
; Doyle EG
; Johnson SR
; Labenski MT
; Morgan BA
; O'Donovan G
; Sarjeant AA
; Skinner S
; Thompson CD
; Griffin ST
; Westlin W
; White KF
ACS Med Chem Lett
2013[Apr]; 4
(4
): 381-6
PMID24900682
show ga
Semisynthetic analogues of fumagillin, 1, inhibit methionine aminopeptidase-2
(MetAP2) and have entered the clinic for the treatment of cancer. An optimized
fumagillin analogue, 3 (PPI-2458), was found to be orally active, despite
containing a spiroepoxide function that formed a covalent linkage to the target
protein. In aqueous acid, 3 underwent ring-opening addition of water and HCl,
leading to four products, 4-7, which were characterized in detail. The
chlorohydrin, but not the diol, products inhibited MetAP2 under weakly basic
conditions, suggesting reversion to epoxide as a step in the mechanism. In
agreement, chlorohydrin 6 was shown to revert rapidly to 3 in rat plasma. In an
ex vivo assay, rats treated with purified acid degradants demonstrated inhibition
of MetAP2 that correlated with the biochemical activity of the compounds. Taken
together, the results indicate that degradation of the parent compound was
compensated by the formation of active equivalents leading to a pharmacologically
useful level of MetAP2 inhibition.