Cytotoxic peptides and conjugates thereof

Patent metadata

Field	Value
Publication number	US-9988420-B2
Application number	US-201415104727-A
Country	US
Kind code	B2
Filing date	Dec 17, 2014
Priority date	Dec 17, 2013
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

Abstract

Disclosed herein are novel cytotoxic peptides of formula (I) as described herein:

and the use of such peptides in making immunoconjugates (i.e Antibody Drug Conjugates) Also described herein are immunoconjugates (i.e Antibody Drug Conjugates) comprising such novel cytotoxic peptide linked to an antigen binding moiety, such as an antibody; where such immunoconjugates are useful for treating cell proliferative disorders. The invention further provides pharmaceutical compositions comprising these immunoconjugates, compositions comprising the immunoconjugates with a therapeutic co-agent, and methods to use these immunoconjugates and compositions for treating cell proliferation disorders.

First claim

We claim:

1. A compound or stereoisomer thereof having the structure of Formula (I)

wherein:
R 1 is a C-linked 6 membered heterocycloalkyl containing 1-2 N heteroatoms and a C 1 -C 2 alkylene bridge or R 1 is a C-linked 5-8 membered fused bicyclic heterocycloalkyl containing 1-2 N heteroatoms, wherein each is unsubstituted, or each is substituted with an R 7 and 0 to 3 substituents independently selected from R 5 and R 6 , or each is substituted with 1 to 3 substituents independently selected from R 5 and R 6 ;
R 2 is —C 1 -C 6 alkyl;
R 3 is

R 4 is —OH, C 1 -C 6 alkoxy, —N(R 14 ) 2 , —R 16 , —NR 12 (CH 2 ) m N(R 14 ) 2 , —NR 12 (CH 2 ) m R 16 , -LR 9 , —NHS(O) 2 R 11 , —NHS(O) 2 (CH 2 ) m N 3 , —NHS(═O) 2 LR 9 ,

R 5 is C 1 -C 6 alkyl, —C(═O)R 11 , —(CH 2 ) m OH, —C(═O)(CH 2 ) m OH, —C(═O)((CH 2 ) m O) n R 12 , —((CH 2 ) m O) n R 12 , or C 1 -C 6 alkyl which is optionally substituted with —CN, —C(═O)NH 2 or 1 to 5 hydroxyl;
R 6 is halo, oxo, OH, C 1 -C 6 alkyl, —N(R 14 ) 2 , —R 16 and —NR 12 C(═O)R 11 ;
R 7 is LR 9 ;
R 8 is H or LR 9 ;
each L is independently selected from -L 1 L 2 L 3 L 4 L 5 L 6 - , -L 6 L 5 L 4 L 3 L 2 L 1 -, -L 1 L 2 L 3 L 4 L 5 -, -L 5 L 4 L 3 L 2 L 1 -, -L 1 L 2 L 3 L 4 -, -L 4 L 3 L 2 L 1 -, -L 1 L 2 L 3 -, -L 3 L 2 L 1 -, -L 1 L 2 -, -L 2 L 1 - and -L 1 ,
wherein
L 1 is selected from:
—(CH 2 ) m —, —C(═O)(CH 2 ) m —, —C(═O)X 1 X 2 C(═O)(CH 2 ) m —, —C(═O)X 1 X 2 C(═O)(CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —C(═O)X 1 X 2 C(═O)(CH 2 ) m X 3 (CH 2 ) m —, —C(═O)X 1 X 2 C(═O)((CH 2 ) m O) n (CH 2 ) m —, —C(═O)X 1 X 2 C(═O)((CH 2 ) m O) n (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —C(═O)X 1 X 2 C(═O)((CH 2 ) m O) n (CH 2 ) m NR 12 C(═O)(CH 2 ) m X 3 (CH 2 ) m —, —C(═O)X 1 X 2 C(═O)((CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —C(═O)X 1 X 2 C(═O)(CH 2 ) m NR 12 C(═O)((CH 2 ) m O) n (CH 2 ) m —, —C(═O)X 1 X 2 C(═O)(CH 2 ) m NR 12 C(═O)((CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —C(═O)X 1 X 2 (CH 2 ) m X 3 (CH 2 ) m —, —C(═O)X 1 X 2 ((CH 2 ) m O) n (CH 2 ) m —, —C(═O)X 1 X 2 ((CH 2 ) m O) n (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —C(═O)X 1 X 2 ((CH 2 ) m O) n (CH 2 ) m NR 12 C(═O)(CH 2 ) m X 3 (CH 2 ) m —, —C(═O)X 1 X 2 ((CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —C(═O)X 1 X 2 (CH 2 ) m NR 12 ((CH 2 ) m O) n (CH 2 ) m —, —C(═O)X 1 X 2 C(═O)(CH 2 ) m NR 12 ((CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —C(═O)((CH 2 ) m O) n (CH 2 ) m —, —(CH 2 ) m S(═O) 2 ((CH 2 ) m O) n (CH 2 ) m —, —C(═O)(CH 2 ) m NR 12 (CH 2 ) m —, —C(═O)NR 12 (CH 2 ) m —, —C(═O)NR 12 (CH 2 ) m X 3 (CH 2 ) m —, —C(═O)NH(CH 2 ) m NR 12 C(═O)X 1 X 2 C(═O)(CH 2 ) m —, —C(═O)(CH 2 ) m X 3 ((CH 2 ) m O) n —, —C(═O)X 1 C(═O)NR 12 (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —C(═O)X 1 C(═O)NR 12 (CH 2 ) m X 3 (CH 2 ) m —, —C(═O)NR 12 (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —C(═O)NR 12 (CH 2 ) m NR 12 C(═O)(CH 2 ) m X 3 (CH 2 ) m —,

 —(CH 2 ) m C(═O)NR 12 (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —(CH 2 ) m C(═O)—, —(CH 2 ) m C(═O)X 2 X 1 C(═O)—, —(CH 2 ) m X 3 (CH 2 ) m C(═O)X 2 X 1 C(═O)—, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m C(═O)NR 12 (CH 2 ) m —, —(CH 2 ) m NR 12 C(═O)(CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m (O(CH 2 ) m ) n C(═O)—, —(CH 2 ) m (O(CH 2 ) m ) n S(═O) 2 (CH 2 ) m —, —(CH 2 ) m NR 12 (CH 2 ) m C(═O)—, —(CH 2 ) m NR 12 C(═O)—, —(CH 2 ) m C(═O)X 2 X 1 C(═O)NR 12 (CH 2 ) m NHC(═O)—, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m NR 12 C(═O)X 1 —, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m NR 12 C(═O)—,

 —((CH 2 ) m O) n (CH 2 ) m —, —(CH 2 ) m (O(CH 2 ) m ) n —, —(CH 2 ) m (O(CH 2 ) m ) n X 3 (CH 2 ) m —, —(CH 2 ) m X 3 ((CH 2 ) m O) n (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m C(═O)—, —C(═O)(CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m (O(CH 2 ) m ) n C(═O)—, —C(═O)((CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m C(═O)—, —C(═O)(CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —C(═O)(CH 2 ) m NR 12 C(═O)O(CH 2 ) m —, —(CH 2 ) m OC(═O)NR 12 (CH 2 ) m C(═O)—, —S(═O) 2 (CH 2 ) m NR 12 C(═O)O(CH 2 ) m —, —(CH 2 ) m OC(═O)NR 12 (CH 2 ) m S(═O) 2 —, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m (O(CH 2 ) m ) n C(═O)—, —C(═O)((CH 2 ) m O) n (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m C(═O)NR 12 (CH 2 ) m —, —(CH 2 ) m NR 12 C(═O)(CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —C(═O)NR 12 (CH 2 ) m NR 12 C(═O)—, —(CH 2 ) m S(CH 2 ) m —, —NR 12 C(═O)(CH 2 ) m —, —NR 12 C(═O)(CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m C(═O)NR 12 —, —(CH 2 ) m C(═O)NR 12 —, —(CH 2 ) m NR 12 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m —, —((CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m (O(CH 2 ) m ) n —, —NR 12 (CH 2 ) m —, —NR 12 C(R 12 ) 2 (CH 2 ) m —, —(CH 2 ) m C(R 12 ) 2 NR 12 —, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m NR 12 —, —NR 12 (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —NR 12 C(R 12 ) 2 (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m C(R 12 ) 2 NR 12 —, —NR 12 (CH 2 ) m X 3 (CH 2 ) m —, —NR 12 C(R 12 ) 2 (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m C(R 12 ) 2 NR 12 —, —NR 12 C(R 12 ) 2 (CH 2 ) m OC(═O)NR 12 (CH 2 ) m —, —(CH 2 ) m NR 12 C(═O)O(CH 2 ) m C(R 12 ) 2 NR 12 —, —NR 12 C(R 12 ) 2 (CH 2 ) m OC(═O)NR 12 (CH 2 ) m X 3 (CH 2 ) m —, —NR 12 (CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m (O(CH 2 ) m ) n NR 12 —, —NR 12 (CH 2 ) m O) n (CH 2 ) m —, —(CH 2 ) m (O(CH 2 ) m ) n NR 12 —, —(CH 2 ) m X 3 (CH 2 ) m NR 12 C(═O)O(CH 2 ) m C(R 12 ) 2 NR 12 —, —NR 12 C(R 12 ) 2 (CH 2 ) m OC(═O)NR 12 ((CH 2 ) m O) n (CH 2 ) m —, —(CH 2 ) m (O(CH 2 ) m ) n NR 12 C(═O)O(CH 2 ) m C(R 12 ) 2 NR 12 —, —NR 12 C(R 12 ) 2 (CH 2 ) m OC(═O)NR 12 ((CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m (O(CH 2 ) m ) n NR 12 C(═O)O(CH 2 ) m C(R 12 ) 2 NR 12 —, —(CH 2 ) m X 3 (CH 2 ) m NR 12 —, —NR 12 ((CH 2 ) m O) n (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m (O(CH 2 ) m ) n NR 12 —, —(CH 2 ) m NR 12 —, —NR 12 ((CH 2 ) m O) n (CH 2 ) m —, —NR 12 ((CH 2 ) m O) n (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m (O(CH 2 ) m ) n NR 12 —, —(CH 2 ) m (O(CH 2 ) m ) n NR 12 —, —(C(R 12 ) 2 ) m —, —(CH 2 CH 2 O) n —, —(OCH 2 CH 2 ) n —, —(CH 2 ) m O(CH 2 ) m —, —S(═O) 2 (CH 2 ) m —, —(CH 2 ) m S(═O) 2 —, —S(═O) 2 (CH 2 ) m NR 12 C(═O)(CH 2 ) m —, —(CH 2 ) m C(═O)NR 12 (CH 2 ) m S(═O) 2 —, —S(═O) 2 (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m S(═O) 2 —, —(CH 2 ) m X 2 X 1 C(═O)—, —C(═O)X 1 X 2 (CH 2 ) m —, —(CH 2 ) m (O(CH 2 ) m ) n C(═O)X 2 X 1 C(═O)—, —C(═O)X 1 X 2 C(═O)((CH 2 ) m O) n (CH 2 ) m —, —(CH 2 ) m (O(CH 2 ) m ) n X 2 X 1 C(═O)—, —(CH 2 ) m X 3 (CH 2 ) m X 2 X 1 C(═O)—, —C(═O)X 1 X 2 (CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m (O(CH 2 ) m ) n X 2 X 1 C(═O)—, —(CH 2 ) m X 3 (CH 2 ) m C(═O)NR 12 (CH 2 ) m NR 12 C(═O)—, —(CH 2 ) m X 3 (CH 2 ) m C(═O)NR 12 (CH 2 ) m C(═O)—, —C(═O)(CH 2 ) m NR 12 C(═O(CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m X 3 (CH 2 ) m C(═O)NR 12 (CH 2 ) m (O(CH 2 ) m ) n C(═O)—, —C(═O)((CH 2 ) m O) n (CH 2 ) m NR 12 C(═O)(CH 2 ) m X 3 (CH 2 ) m —, —(CH 2 ) m NR 12 C(═O)X 1 X 2 C(═O)(CH 2 ) m —, —(CH 2 ) m C(═O)X 2 X 1 C(═O)NR 12 (CH 2 ) m —, —X 4 X 1 X 2 C(═O)(CH 2 ) m —, —(CH 2 ) m C(═O)X 2 X 1 X 4 —, —X 1 C(═O)(CH 2 ) m NHC(═O)(CH 2 ) m —, —(CH 2 ) m C(═O)NH(CH 2 ) m C(═O)X 1 —, —C(═O)CHR aa NR 12 —, —CHR aa C(═O)—, —C(═O)NR 12 —, —C(═O)O—, —S—, —SCH 2 (C═O)NR 12 —, —NR 12

Assignees

• Geierstanger Bernhard Hubert
• Grunewald Jan
• Ou Weijia
• Uno Tetsuo
• Wan Yongqin
• Wang Xing
• Jin Yunho
• Novartis Ag

Inventors

• Geierstanger Bernhard Hubert
• Grunewald Jan
• Ou Weijia
• Uno Tetsuo
• Wan Yongqin
• Wang Xing
• Jin Yunho

Classifications

• A61P35/00

  Antineoplastic agents · CPC title

• A61P43/00

  Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00 · CPC title

• C07K7/02

  Linear peptides containing at least one abnormal peptide link · CPC title

• A61K47/6817

  Toxins · CPC title

• C07K5/0205 Primary

  containing the structure -NH-(X)3-C(=0)-, e.g. statine or derivatives thereof · CPC title