A reagent having the general formula of General Formula I:
1
wherein group R is an electrophilic or a nucleophilic moiety suitable for reaction of the reagent with a biologically active species; group R
2
is one of H and OH moieties; group R
3
is one of an alkyl and a methylene bearing an electronegative substituent; group Z is one of (CH
2
)
n
and CH
2
O(CH
2
CH
2
O)
n
2
, and n is an integer of from 1 to 5, and n
2
is an integer of from 1 to 4; and each of group Z
2
and Z
3
are (CH
2
)CONH(CH
2
)
3
CONH(CH
2
)
2
. Also, a reagent having the general formula of General Formula II:
2
group R
2
is one of H and OH moieties; group Z is one of (CH
2
)
n
and CH
2
O(CH
2
CH
2
O)
n
2
, and n is an integer of from 1 to 5, and n
2
is an integer of from 1 to 4; each of group Z
2
and group Z
3
include one of (CH
2
)CONH(CH
2
)
3
CONH(CH
2
)
2
; and (CH
2
)CONH(CH
2
); and group R is an electrophilic or a nucleophilic moiety suitable for reaction of the reagent with the biologically active species.
一种具有通式I的试剂:其中R基团是适合与
生物活性物种反应的亲电性或亲核性官能团;R2基团是H和OH官能团之一;R3基团是烷基或带有电负取代基的亚甲基;Z基团是(
CH2)n和 O( O)n2之一,其中n是1至5的整数,n2是1至4的整数;Z2和Z3基团均为( )CONH( )3CONH( )2。另外,一种具有通式II的试剂:其中R2基团是H和OH官能团之一;Z基团是( )n和 O( O)n2之一,其中n是1至5的整数,n2是1至4的整数;Z2和Z3基团均包括( )CONH( )3CONH( )2和( )CONH( )之一;而R基团是适合与
生物活性物种反应的亲电性或亲核性官能团。