864076-02-8Relevant articles and documents
New Broad-Spectrum Antibiotics Containing a Pyrrolobenzodiazepine Ring with Activity against Multidrug-Resistant Gram-Negative Bacteria
Picconi, Pietro,Hind, Charlotte K.,Nahar, Kazi S.,Jamshidi, Shirin,Di Maggio, Lucia,Saeed, Naima,Evans, Bonnie,Solomons, Jessica,Wand, Matthew E.,Sutton, J. Mark,Rahman, Khondaker Miraz
, p. 6941 - 6958 (2020/08/14)
It is urgent to find new antibiotic classes with activity against multidrug-resistant (MDR) Gram-negative pathogens as the pipeline of antibiotics is essentially empty. Modified pyrrolobenzodiazepines with a C8-linked aliphatic heterocycle provide a new class of broad-spectrum antibacterial agents with activity against MDR Gram-negative bacteria, including WHO priority pathogens. The structure-activity relationship established that the third ring was particularly important for Gram-negative activity. Minimum inhibitory concentrations for the lead compounds ranged from 0.125 to 2 mg/L for MDR Gram-negative, excluding Pseudomonas aeruginosa, and between 0.03 and 1 mg/L for MDR Gram-positive species. The lead compounds were rapidly bactericidal with >5 log reduction in viable count within 4 h for Acinetobacter baumannii and Klebsiella pneumoniae. The lead compound inhibited DNA gyrase in gel-based assays, with an IC50 of 3.16 ± 1.36 mg/L. This study provides a new chemical scaffold for developing novel broad-spectrum antibiotics which can help replenish the pipeline of antibiotics.
POLYCYCLIC AMIDES AS CYTOTOXIC AGENTS
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Page/Page column 180-181, (2020/03/29)
The invention relates to a compound of formula (I): or pharmaceutically acceptable salts, solvates, tautomers, stereoisomers or mixtures thereof; wherein the fused ring moiety is a non-alkylating moiety; and wherein the compounds are useful as medicaments, in particular for use as a drug in an antibody-drug conjugate and in the treatment of a proliferative disease, a bacterial infection, a malarial infection and inflammation.
BENZODIAZEPINE DERIVATIVES
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Page/Page column 138; 146, (2019/07/17)
The invention relates to novel benzodiazepine derivatives with antiproliferative activity and more specifically to novel benzodiazepine compounds of formulae (I), (II) and (III). The invention also provides conjugates of the benzodiazepine compounds linked to a cell-binding agent. The invention further provides compositions and methods useful for inhibiting abnormal cell growth or treating a proliferative disorder in a mammal using the compounds or conjugates of the invention.
PBD ANTIBACTERIAL AGENTS
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Page/Page column 91, (2017/07/18)
The invention relates to pyrrolobenzodiazepines compounds (PBDs) and to pharmaceutically acceptable salts thereof, which are useful as medicaments, in particular, to treat bacterial infections. The PBDs are compounds of formula (I): and salts and solvates thereof; wherein: dotted lines indicates the optional presence of a double bond; X, X1, X2, X3 and X4 are connecting functional groups; L is C1-12 alkylene; R4, R5 and R6 are independently selected from phenylene, cyclopentanylene, cyclohexanylene, 5 - to 9 -membered heteroarylene and 5 - to 6-membered hetereocyclylene groups, and these groups are optionally substituted with up to three optional substituent groups; R7 is selected from N(C1-6 alkyl)(C1-6alkyl), 5 - to 6-membered nitrogen-containing hetereocyclyl groups, a monosaccharide moiety and an amino monosaccharide moiety wherein these groups are optionally substituted; and R8 and R9 either together form a double bond, or are selected from H and OR14, or R8 is a prodrug moiety and R9 is OR14; m is 0 or 1; with the proviso that when X4 is C(O)NH then the up to three optional substituents of R7 are not selected from (CH2)k -CO2R12; with the proviso that when X4 is (CH2)tO then R4 is not phenylene, m is 1 and R6 is not a 5 - to 9 -membered heteroarylene; and with the proviso that when X4 is C(O)NH or NHC(O) that R4 and/or R6 is not 5 - to 9 -membered heteroarylene.
GC-Targeted C8-linked pyrrolobenzodiazepine-biaryl conjugates with femtomolar in vitro cytotoxicity and in vivo antitumor activity in mouse models
Rahman, Khondaker M.,Jackson, Paul J. M.,James, Colin H.,Basu, B. Piku,Hartley, John A.,De La Fuente, Maria,Schatzlein, Andreas,Robson, Mathew,Pedley, R. Barbara,Pepper, Chris,Fox, Keith R.,Howard, Philip W.,Thurston, David E.
, p. 2911 - 2935 (2013/05/23)
DNA binding 4-(1-methyl-1H-pyrrol-3-yl)benzenamine (MPB) building blocks have been developed that span two DNA base pairs with a strong preference for GC-rich DNA. They have been conjugated to a pyrrolo[2,1-c][1,4]benzodiazepine (PBD) molecule to produce
PYRROLOBENZODIAZEPINES
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Page/Page column 50; 51, (2013/11/19)
A compound of formula (I) or a salt or solvate thereof, wherein the dotted double bond indicates the presence of a single or double bond between C2 and C3; R2 is selected from -H, -OH, =O, =CH2, -CN, -R, OR, halo, dihalo, =CHR, =CHRR', -O- SO2-R, CO2R and COR; R7 is selected from H, R, OH, OR, SH, SR, NH2, NHR, NRR', nitro, Me3Sn and halo; where R and R' are independently selected from optionally substituted C1-7 alkyl, C3-20 heterocyclyl and C5-20 aryl groups; R10 and R11 either together form a double bond, or are selected from H and QRQ respectively, where Q is selected from O, S and NH and RQ is H or C1-7 alkyl or H and SOxM, where x is 2 or 3, and M is a monovalent pharmaceutically acceptable cation; A is selected from (A1), (A2), (A3), (A4) or (A5) where X1 and Y1 are selected from: CH and NH; CH and NMe; N and NMe; CH and S; N and S; N and O; and CH and O, respectively; X2 and Y2 are selected from: CH and NH; CH and NMe; N and NMe; CH and S; N and S; N and O; and CH and O, respectively; Z1 is selected from O and S; Z2 is selected from CH and N; F is selected from a single bond and –(E-F1)m-; each E is independently selected from a single bond, and –C(=O)-NH-; each F1 is independently a C3-20 heteroarylene group; m is 1, 2 or 3; G is selected from hydrogen, C1-4alkyl, -C(=O)-O-C1-4alkyl, -(CH2)n-C3-20 heterocycloalkyl, and –O-(CH2)n-C3-20 heterocycloalkyl group; each n is 0-4; provided that A2 is not A2', where X1 and Y1 of A2' are selected from: CH and NMe; COH and NMe; CH and S; N and NMe; N and S, respectively; and provided that A3 is not A3', where X2 and Y2 of A3' are selected from: CH and NMe; COH and NMe; CH and S; N and NMe; N and S, respectively; B is either a single bond or (B1), where X and Y of B1 are selected from: CH and NMe; COH and NMe; CH and S; N and NMe; N and S, respectively; and R1 is C1-4 alkyl.
PYRROLOBENZODIAZEPINES
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Page/Page column 42; 43, (2013/11/19)
Pyrrolobenzodiazepine (PBDs) having a (1-methyl-1H-pyrrol-3- yl)phenyl based amino residue were found to be highly effective compounds having improved cytotoxicity ad DNA binding properties.
AMINO ACIDS
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Page/Page column 56; 58-59, (2008/06/13)
Compounds of formula (I): Z’ -CO-A-B-NH-Z (I) wherein: Z is H or an amino protecting group; Z’ is OH, a protected or activated hydroxyl group or C1; A is an optionally substituted C5-6 arylene group; and B is an optionally substituted C5-6 arylene group.
