A compound, or a pharmaceutically acceptable salt or ester thereof, comprises the structure: [(P1-S1
j
)
p
-L-(S2
q
-P2)
r
]
t
wherein: P1 and P2, which may be the same or different, are cyclic oligopeptide moieties, at least one of P1 and P2 having the motif B-Arg or B-(Me) Arg within the cyclic moiety, wherein B is a basic amino acid, a derivative thereof, or phenylalanine or a derivative thereof; S1 and S2 are spacer groups, which may be the same or different; L is a linker moiety containing at least two functional groups for attachment of the cyclic oligopeptides or spacer groups; n and q are independently 0 or 1; p and r are independently integers of 1 or more; and t is an integer of 1 or more, provided that, when t, p or r is greater than 1, the cyclic oligopeptide moiety, spacer group and/or the value of j or q may be the same or different between the multiple (P1-S1
j
) moieties or multiple (S2
q
-P2) moieties.
该化合物或其药学上可接受的盐或
酯包括结构:[(P1-S1j)p-L-(
S2q-P2)r]t,其中:P1和P2可以相同也可以不同,是环状寡肽基团,其中至少一个P1和P2在环状基团内具有B-Arg或B-(Me) Arg基序,其中B是一种碱性
氨基酸,其衍
生物,
苯丙
氨酸或其衍
生物;S1和
S2是间隔基团,可以相同也可以不同;L是一个连接基团,含有至少两个功能基团,用于连接环状寡肽或间隔基团;n和q独立地为0或1;p和r独立地为1或更多的整数;t是1或更多的整数,但当t,p或r大于1时,环状寡肽基团,间隔基团和/或j或q的值可能在多个(P1-S1j)基团或多个(
S2q-P2)基团之间相同或不同。