Triphenylbutanamines: Kinesin Spindle Protein Inhibitors with in Vivo Antitumor Activity
摘要:
The human mitotic kinesin Eg5 represents a novel mitotic spindle target for cancer chemotherapy. We previously identified S-trityl-L-cysteine (STLC) and related analogues as selective potent inhibitors of Eg5. We herein report on the development of a series of 4,4,4-triphenylbutan-1-amine inhibitors derived from the STLC scaffold. This new generation systematically improves on potency: the most potent C-trityl analogues exhibit K-i(aPP) <= 10 nM and GI(50) approximate to 50 nM, comparable to results from the phase II clinical benchmark ispinesib. Crystallographic studies reveal that they adopt the same overall binding configuration as S-trityl analogues at an allosteric site formed by loop L5 of Eg5. Evaluation of their druglike properties reveals favorable profiles for future development and, in the clinical candidate ispinesib, moderate hERG and CYP inhibition. One triphenylbutanamine analogue and ispinesib possess very good bioavailability (51% and 45%, respectively), with the former showing in vivo antitumor growth activity in nude mice xenograft studies.
Triphenylbutanamines: Kinesin Spindle Protein Inhibitors with in Vivo Antitumor Activity
摘要:
The human mitotic kinesin Eg5 represents a novel mitotic spindle target for cancer chemotherapy. We previously identified S-trityl-L-cysteine (STLC) and related analogues as selective potent inhibitors of Eg5. We herein report on the development of a series of 4,4,4-triphenylbutan-1-amine inhibitors derived from the STLC scaffold. This new generation systematically improves on potency: the most potent C-trityl analogues exhibit K-i(aPP) <= 10 nM and GI(50) approximate to 50 nM, comparable to results from the phase II clinical benchmark ispinesib. Crystallographic studies reveal that they adopt the same overall binding configuration as S-trityl analogues at an allosteric site formed by loop L5 of Eg5. Evaluation of their druglike properties reveals favorable profiles for future development and, in the clinical candidate ispinesib, moderate hERG and CYP inhibition. One triphenylbutanamine analogue and ispinesib possess very good bioavailability (51% and 45%, respectively), with the former showing in vivo antitumor growth activity in nude mice xenograft studies.
The phototrityl group. Photocrosslinking of oligonucleotides to BSA
作者:A Bidaine、C Berens、E Sonveaux
DOI:10.1016/0960-894x(96)00191-6
日期:1996.5
A photoactivable trityl cap was used to immobilize an oligonucleotide on BSA (bovine serum albumin). The conjugate was able to hybridize with a complementary sequence. (C) 1996 Elsevier Science Ltd
Trityl derivatives for enhancing mass spectrometry
申请人:SHCHEPINOV Mikhail Sergeevich
公开号:US20080248584A1
公开(公告)日:2008-10-09
Compounds of formula (IIa):
are provided where:
X is a group capable of being cleaved from the α-carbon atom to form an ion of formula (I′)
C
is a carbon atom bearing a single positive charge or a single negative charge;
The invention further provides compounds of formula (IIb):
where:
X
is a counter-ion to C
.
The compounds of formula (IIa) and (IIb) may form ions of formula (I′) by either cleaving the C—X bond between X and the α-carbon atoms in the case of the compounds of formula (IIa) or dissociating X
in the case of compounds of formula (IIb).
Triphenylbutanamines: Kinesin Spindle Protein Inhibitors with in Vivo Antitumor Activity
作者:Fang Wang、James A. D. Good、Oliver Rath、Hung Yi Kristal Kaan、Oliver B. Sutcliffe、Simon P. Mackay、Frank Kozielski
DOI:10.1021/jm201195m
日期:2012.2.23
The human mitotic kinesin Eg5 represents a novel mitotic spindle target for cancer chemotherapy. We previously identified S-trityl-L-cysteine (STLC) and related analogues as selective potent inhibitors of Eg5. We herein report on the development of a series of 4,4,4-triphenylbutan-1-amine inhibitors derived from the STLC scaffold. This new generation systematically improves on potency: the most potent C-trityl analogues exhibit K-i(aPP) <= 10 nM and GI(50) approximate to 50 nM, comparable to results from the phase II clinical benchmark ispinesib. Crystallographic studies reveal that they adopt the same overall binding configuration as S-trityl analogues at an allosteric site formed by loop L5 of Eg5. Evaluation of their druglike properties reveals favorable profiles for future development and, in the clinical candidate ispinesib, moderate hERG and CYP inhibition. One triphenylbutanamine analogue and ispinesib possess very good bioavailability (51% and 45%, respectively), with the former showing in vivo antitumor growth activity in nude mice xenograft studies.