61 results about "Pyrrolobenzodiazepine" patented technology

Compounds and a method of synthesis of compounds of formula (Ia) or (Ib): and salts, solvates, and chemically protected forms thereof, wherein the dotted lines indicate the optional presence of a double bond between C1 and C2 or C2 and C3; R2 and R3 are independently selected from —H, ═O, ═CH2, —CN, —R, OR, halo, ═CH—R, O—SO2—R, CO2R and COR; R10 is a carbamate-based nitrogen protecting group; and R11 is an oxygen protecting group.

The present inventors have developed a key intermediate for the production of C2 substituted PBDs, which has a leaving group at the C2 position, a carbamate protecting group at the N10 position and a protected hydroxy group at the C11 position. In a first aspect, the present invention comprises a compound with a the formula (I), wherein: R10 is a carbamate-based nitrogen protecting group; R11 is an oxygen protecting group; and R2 is a labile leaving group. In a further aspect, the present invention comprises a method of synthesising a compound of formula (III), or a solvate thereof, from a compound of formula (I) as defined in the first aspect, R16 is either O—R11, wherein R11 is as defined in the first aspect, or OH, or R10 and R16 together form a double bond between N10 and C11; and R15 is R. The other substituents are defined in the claims. Further aspects of the present invention relate to compounds of formula (III) (including solvates thereof when R10 and R16 form a double bond between N10 and C11, and pharmaceutical salts thereof), pharmaceutical compositions comprising these, and their use in the manufacture of a medicament for the treatment of a proliferative disease.

Conjugates and compounds for making conjugates which are PBD molecules linked via the N10 position are disclosed, along with the use of the conjugates for treating proliferative diseases, including cancer.

Conjugates of an antibody that binds to HER2 with PBD dimers.

The present invention provides a compound of general formula 5, useful as potential antitumour agents against human cancer cell lines. The present invention further provides a process for the preparation of pyrrolo[2,1-c][1,4]benzodiazepine hybrids of general formula 5wherein, X1, X2, X3 is selected from H or Cl or CH3, Y is selected from O or NH, Z is selected from C═O or CH2 and n=1 to 4.

The present invention provides a compound of general formula 5, useful as potential antitumour agents against human cancer cell lines. The present invention further provides a process for the preparation of pyrrolo[2,1-c][1,4]benzodiazepine hybrids of general formula (5): wherein n=3, 4, 5, 6, 8 and wherein R1 and R2 is selected from the group consisting of R1═H, R2═H or R1═CH3O, R2=CH3O or R1═CH3O and R2═C2H5O.

This invention provides pyrrolobenzodiazepine pyridine carboxamides selected from those of Formula (1), which act as follicle stimulating hormone receptor antagonists. The invention also provides pharmaceutical compositions and methods of treatment utilizing the compounds of Formulae (1) and (2).

Conjugates of specific PBD dimers with an antibody that that binds to HER2, the antibody comprising a VH domain having the sequence according to SEQ ID NO. 1.

A conjugate of formula (A):

Conjugate compounds of formula (A):wherein:R2 iswhere R36a and R36b are independently selected from H, F, C1-4 saturated alkyl, C2-3 alkenyl, which alkyl and alkenyl groups are optionally substituted by a group selected from C1-4 alkyl amido and C1-4 alkyl ester; or, when one of R36a and R36b is H, the other is selected from nitrile and a C1-4 alkyl ester;R6 and R9 are independently selected from H, R, OH, OR, SH, SR, NH2, NHR, NRR′, NO2, Me3Sn and halo;R7 is independently selected from H, R, OH, OR, SH, SR, NH2, NHR, NRR′, NO2, Me3Sn and halo;Y is selected from formulae A1, A2, A3, A4, A5 and A6:L is a linker connected to a cell binding agent;CBA is the cell binding agent;n is an integer selected in the range of 0 to 43;RA4 is a C1-6 alkylene group;either(a) R10 is H, and R11 is OH, ORA, where RA is C1-4 alkyl; or(b) R10 and R11 form a nitrogen-carbon double bond between the nitrogen and carbon atoms to which they are bound; or(c) R10 is H and R11 is OSOzM, where z is 2 or 3 and M is a monovalent pharmaceutically acceptable cation;R and R′ are each independently selected from optionally substituted C1-12 alkyl, C3-20 heterocyclyl and C5-20 aryl groups, and optionally in relation to the group NRR′, R and R′ together with the nitrogen atom to which they are attached form an optionally substituted 4-, 5-, 6- or 7-membered heterocyclic ring;wherein R16, R17, R19, R20, R21 and R22 are as defined for R6, R7, R9, R10, R11 and R2 respectively;wherein Z is CH or N;wherein T and T′ are independently selected from a single bond or a C1-9 alkylene, which chain may be interrupted by one or more heteroatoms e.g. O, S, N(H), NMe, provided that the number of atoms in the shortest chain of atoms between X and X′ is 3 to 12 atoms;andX and X′ are independently selected from O, S and N(H).

A conjugate of formula (A):

Novel pyrrolo[2,1-c][1,4]benzodiazepine hybrids as well as processes for the preparation of novel pyrrolo[2,1-c][1,4]benzodiazepine hybrids are dislcosed. More particularly, present invention relates to a process for the preparation of novel pyrrolo[2,1-c][1,4]benzodiazepine hybrids as DNA sequence selective agents which are useful as potential antitumour agents. In particular, the present invention relates to a process for the preparation of new pyrrolo [2,1-c][1,4]benzodiazepine hybrids as potential antitumour agents. These compounds have the formula XIV shown below:

Conjugates of an antibody that binds to CD19 with PBD dimers.

Conjugates of an antibody that binds to CD25 with PBD dimers.

Conjugates of an isolated humanized, anti-CD22 antibody with PBD dimers.

A conjugate of formula (A): the dotted lines indicate the optional presence of a double bond between C1 and C2 or C2 and C3; R2 is independently selected from H, OH, =0, =CH2, CN, R, OR, =CH-RD, =C(RD)2, 0-S02-R, C02R and COR, and optionally further selected from halo or dihalo; where RD is independently selected from R, C02R, COR, CHO, C02H, and halo; R6 and R9 are independently selected from H, R, OH, OR, SH, SR, NH2, NHR, NRR', NO2, Me3Sn and halo; R7 is independently selected from H, R, OH, OR, SH, SR, NH2, NHR, NRR', N02, Me3Sn and halo; Y is selected from a single bond, and a group of formulae A1 or A2: where N shows where the group binds to the N10 of the PBD moiety; RL1 and RL2 are independently selected from H and methyl, or together with the carbon atom to which they are bound form a cyclopropylene group; CBA represents a cell binding agent; Q is independently selected from O, S and NH; R11 is either H, or R or, where Q is O, S03M, where M is a metal cation; R and R' are each independently selected from optionally substituted C1-12alkyl, C3-20 heterocyclyl and C5-20aryl groups, and optionally in relation to the group NRR', R and R' together with the nitrogen atom to which they are attached form an optionally substituted 4-, 5-; 6- or 7-metfibered heteracyciie ring; wherein R12 R16, R19 and R17 are as defined for R2, R6, R9 and R7 respectively: wherein R" is a C3-12 alkylene group, which chain may be interrupted by one or more heteroatoms, e.g. O, S, N(H}; NMe and / or aromatic rings, e.g. benzene or pyridine, which rings are optional y substituted; X and X' are independently selected from O, S and N(H).

Conjugates of specific PBD dimers with an antibody that binds to PSMA, the antibody comprising a VH domain having the sequence according to any one of SEQ ID NOs. 1, 3, 5, 7, 8, 9, or 10, optionally further comprising a VL domain having the sequence 5 according to any one of SEQ ID NOs. 2, 4, 6, 11, 12, 13, 14, 15, 16, 17, or 18.

Conjugates of specific PBD dimers with an antibody that that binds to CD19, the antibody comprising a VH domain having the sequence according to any one of SEQ ID NOs. 1, 2, 3, 4, 5 or 6, optionally further comprising a VL domain having the sequence according to any one of SEQ ID NOs. 7, 8, 9, 10, 11 or 12.