METHODS OF USING MONOMETHYLVALINE COMPOSITIONS HAVING PHENYLALANINE CARBOXY MODIFICATIONS AT THE C-TERMINUS
申请人:Seattle Genetics, Inc.
公开号:US20150044238A1
公开(公告)日:2015-02-12
Auristatin peptide analogs of MeVal-Val-Dil-Dap-Phe (MMAF) having a carboxylic acid equivalent at the C-terminal phenylalanine were prepared and attached to ligands through various linkers, including maleimidocaproyl-val-cit-PAB. The resulting ligand-drug conjugates were active in vitro and in vivo in inhibiting cell proliferation and are represented by the general structure of
L
v
-[(LU)
0-1
-(D)
1-4
]
p
wherein L- is Ligand unit; LU is a Linker unit (LU); v is 1; p is an number ranging from about 1 to about 20; and D is a drug moiety having the formula:
wherein the moiety —N(R
9
)Z
1
is a phenylalanine bioisostere, wherein Z
1
is —CH(R
10
)Z
2
so that the phenylalanine bioisostere has the structure of Formula A:
and wherein the substituents R
2
-R
10
, X
1
and Z
2
are as defined.
制备了具有C端苯丙氨酸羧酸等效物的MeVal-Val-Dil-Dap-Phe(MMAF)的Auristatin肽类类似物,并通过各种连接剂将其连接到配体上,包括maleimidocaproyl-val-cit-PAB。所得的配体-药物偶联物在体外和体内抑制细胞增殖方面具有活性,并由以下一般结构表示:Lv-[(LU)0-1-(D)1-4]p,其中L-是配体单元;LU是连接单元(LU);v为1;p为约1至约20的数字;D是具有以下公式的药物基团:其中,—N(R9)Z1基团是苯丙氨酸生物同构体,其中Z1是—CH(R10)Z2,以便苯丙氨酸生物同构体具有A式结构;其中取代基R2-R10、X1和Z2如定义。