The first totalsynthesis of tubulysin B is described. The aziridine route to tubuphenylalanine (Tup) of the tubulysin D/U-series could not be transferred to the synthesis of tubutyrosine (blue moiety). Therefore, tubutyrosine (Tut) was synthesized by a Wittig olefination/diastereoselective catalytic reduction sequence. Interestingly, the C-2 epimer of tubulysin B has a cytotoxic activity almost identical
Conjugates of Cell Binding Molecules with Cytotoxic Agents
申请人:Zhao R. Yongxin
公开号:US20170296663A1
公开(公告)日:2017-10-19
A conjugate of a potent cytotoxic agent with a cell-surface receptor binding molecule having a Formula (I), wherein T, L, m, n, R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
, R
10
, R
11
, R
12
, and R
13
are defined herein, can be used for targeted treatment of cancer, autoimmune disease, and infectious disease.