D-piece modifications of the hemiasterlin analog HTI-286 produce potent tubulin inhibitors
摘要:
Modifications of the D-piece carboxylic acid group of the hemiasterlin analog HTI-286 gave tubulin inhibitors which were potent cytotoxic agents in taxol resistant cell lines expressing P-glycoprotein. Amides derived from proline had potency comparable to HTI-286. Reduction of the carboxylic acid to ketones and alcohols or its conversion to acidic heterocycles also gave potent analogs. Synthetic modifications of the carboxylic acid could be carried out selectively using a wide range of synthetic reagents. Proline analog 3 was found to be effective in a human xenograft model in athymic mice. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis and Biological Activity of Analogues of the Antimicrotubule Agent N,β,β-Trimethyl-l-phenylalanyl-N-[(1S,2E)-3-carboxy-1-isopropylbut-2-enyl]- N1,3-dimethyl-l-valinamide (HTI-286)
摘要:
Hemiasterlin (1), a tripeptide isolated from marine sponges, induces microtubule depolymerization and mitotic arrest in cells. HTI-286 (2), an analogue from an initial study of the hemiasterlins, is presently in clinical trials. In addition to its potent antitumor effects, 2 has the advantage of circumventing the P-glycoprotein-mediated resistance that hampers the efficacy of other antimicrotubule agents such as paclitaxel and vincristine in animal models. This paper describes an in-depth study of the structure-activity relationships of analogues of 2, their effects on microtubule polymerization, and their in vitro and in vivo anticancer activity. Regions of the molecule necessary for potent activity are identified. Groups tolerant of modification, leading to novel analogues, are reported. Potent analogues identified through in vivo studies in tumor xenograft models include one superior analogue, HTI-042 (48).
A compound represented by formula (1):
wherein
b represents an integer of 1 to 5;
X represents —NH— or —CO—;
Z represents a group represented, for example, by formula (Z-1);
R
1
represents a hydrogen atom or (AB)
m
;
AB represents a particular amino acid residue, and when there is a plurality of ABs, each AB may be the same as or different from each other and ABs are bonded to each other via an amide bond;
m represents an integer of 1 to 9;
R
2
represents a hydroxy group or (AC)
g
;
AC represents a particular amino acid residue, and when there is a plurality of ACs, each AC may be the same as or different from each other and ACs are bonded to each other via an amide bond; and
g represents an integer of 1 to 9,
or a salt thereof.
The invention provides a method of treating or inhibiting the growth of or eradicating a tumor in a mammal in need thereof wherein said tumor is resistant to at least one chemotherapeutic agent which method comprises providing to said mammal an effective amount of a compound of Formula II or a pharmaceutically acceptable salt thereof.
Hemiasterlin Derivatives and Antibody-Drug Conjugates Including Same
申请人:Sumitomo Dainippon Pharma Co., Ltd.
公开号:US20200247845A1
公开(公告)日:2020-08-06
A compound represented by formula (1):
wherein
AA represents a particular amino acid residue or a C
1-6
alkyl ester thereof, and when there is a plurality of AAs, each AA may be the same as or different from each other and AAs are bonded to each other via an amide bond;
an N-terminal nitrogen atom of (AA)
m
forms an amide bond together with carbonyl (a);
Q represents an unsubstituted phenyl group, or a group represented by formula (Q-1), formula (Qa-2), formula (Qa-3), formula (Qa-4), formula (Qa-5), formula (Qa-6) or formula (Qa-7);
R
1a
and R
1b
each independently represent a hydrogen atom or a C
1-6
alkyl group; and
m represents an integer of 1 to 10,
or a salt thereof.
Antibody-Drug Conjugates Including Hemiasterlin Derivative
申请人:Sumitomo Dainippon Pharma Co., Ltd.
公开号:US20200247847A1
公开(公告)日:2020-08-06
A compound represented by formula (1-1):
wherein b represents an integer of 1 to 5; and Z is a group represented by formula (Z-1), formula (Z-2), formula (Z-3), formula (Za-1), formula (Za-2), formula (Za-3), formula (Za-4) or formula (Za-5),
or a salt thereof.
[EN] METHOD OF TREATING RESISTANT TUMORS<br/>[FR] METHODE DE TRAITEMENT DE TUMEURS RESISTANTES
申请人:WYETH CORP
公开号:WO2004026293A2
公开(公告)日:2004-04-01
The invention provides a method of treating or inhibiting the growth of or eradicating a tumor in a mammal in need thereof wherein said tumor is resistant to at least one chemotherapeutic agents which method comprises providing to said mammal an effective amount of a compound of Formula II or a pharmaceutically acceptable salt thereof.