Structure−Activity Studies of Antitumor Agent Irofulven (Hydroxymethylacylfulvene) and Analogues
摘要:
Many analogues of the antitumor agent irofulven have been readily prepared by replacing the allylic hydroxyl with a variety of nucleophiles. Analogues of acylfulvene (the precursor to irofulven) were also prepared by Michael reaction with acrolein. The toxicity of the analogues was determined, as well as preclinical antitumor activity. Several analogues exhibited good activity in mouse xenografts. Structural requirements for activity are discussed.
In an embodiment of the invention, a composition for treating a cell population comprises a medicant. The medicant moiety can be an illudofulvene analog. In an embodiment of the invention, a composition for treating a cell population comprises an Affinity Medicant Conjugate (AMC). The affinity moiety can be an antibody, an antibody fragment, a receptor protein, a peptidic growth factor, an anti-angiogenic protein, a specific binding peptide, protease cleavable peptide, a glycopeptide, a peptide, a peptidic toxin, a protein toxin and an oligonucleotide. The affinity moiety can be covalently bound to the medicant via a linker.
The present invention provides illudin analogs of the general formula (I):
where R
1
is (CH
2
)
n
—X—Y or H; n is 0 to 4; X is O or S or N or absent; and Y is an optionally substituted (C
1
-C
8
)alkyl, (C
6
-C
10
)aryl, (C
6
-C
10
)aryl(C
1
-C
4
)alkyl or cyclo(C
3
-C
6
)alkyl optionally comprising one or more heteroatoms; a monosaccharide, an amino acid residue, or H when n is 2-4;
R
2
is absent; or R
1
and R
2
together comprise a 5-7 membered cyclic ring;
R
3
is (C
1
-C
4
)alkyl or H; R
4
is H, SCH
2
CO
2
(C
1
-C
4
)alkyl, O—(C
5
-C
12
)aryl or —S—(C
5
-C
12
)aryl; R
5
is H, OH or absent; R
6
is (C
1
-C
4
)alkyl or absent; R
7
is OH or OSi((C
1
-C
4
)alkyl)
3
; or
R
6
and R
7
together are ethylenedioxy;
R
8
is optionally substituted (C
1
-C
4
)alkyl; and
the bonds represented by --- are individually present or absent. The invention further provides dimers comprising analogs of formula (I).
METHODS, COMPOSITIONS AND DEVICES FOR TREATING CANCER WITH ILLUDOFULVENES
申请人:Kelner, Michael
公开号:EP3667323A1
公开(公告)日:2020-06-17
The present invention relates to compositions, methods and devices for treating cancer with illudofulvenes including methods to detect the expression levels of genes encoding biomarkers in cancer patients and to predict the responsiveness of cancer patients to illudofulvenes.
In an embodiment of the invention, a composition for treating a cell population comprises an Affinity Medicant Conjugate (AMC). The medicant moiety can be a toxin including an acylfulvene or a drug moiety. The affinity moiety can be an antibody, a binding protein, a steroid, a lipid, a growth factor, a protein, a peptide or non peptidic. The affinity moiety can be covalently bound to the medicant via a linker. Novel linkers that can be directed to cysteine, arginine or lysine residues based on solution pH allow greater flexibility in preserving and/or generating specific epitopes in the AMC.
Methods, compositions and devices for treating cancer with illudofulvenes
申请人:AF Chemicals, LLC
公开号:US11160807B1
公开(公告)日:2021-11-02
In an embodiment of the invention, a method of treating cancer includes screening to select a patient population that will respond to an Illudofulvene Analog composition based on the presence of one or more Transcription Coupled Repair (TCR) mutations, deletions or other events interfering with TCR biomarker expression in combination with upregulation of Myc and/or PTGR biomarker expression and treating the patient population with the Illudofulvene Analog composition.