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Duocarmycin analog

  CAS No.:   Cat No.: BADC-00182 4.5  

Duocarmycin analog has cytotoxicity for solid tumor cells that can be used for antibody-drug conjugates (ADCs). Duocarmycins and the analogs acts via binding to the minor groove of DNA and alkylating the nucleobase adenine at the N3 position, which leads to DNA damage and cancer cell death.

Duocarmycin analog

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In Vitro
Duocarmycin analog natural products are promising anti-cancer cytotoxins but too potent for systemic use. Re-engineering of the duocarmycin scaffold has enabled the discovery of prodrugs designed for bioactivation by tissue-specific cytochrome P450 enzymes. Lead prodrugs bioactivated by both P450 isoforms CYP1A1 and CYP2W1 have shown promising results in xenograft studies.
1. A Short Review on the Synthetic Strategies of Duocarmycin Analogs that are Powerful DNA Alkylating Agents
Moses Lee, Vijay Satam, Pravin C Patil Anticancer Agents Med Chem . 2015;15(5):616-30. doi: 10.2174/1871520615666141216144116.
The duocarmycins and CC-1065 are members of a class of DNA minor groove, AT-sequence selective, and adenine-N3 alkylating agents, isolated from Streptomyces sp. that exhibit extremely potent cytotoxicity against the growth of cancer cells grown in culture. Initial synthesis and structural modification of the cyclopropa[c] pyrrolo[3,2-e]indole (CPI) DNA-alkylating motif as well as the indole non-covalent binding region in the 1980s have led to several compounds that entered clinical trials as potential anticancer drugs. However, due to significant systemic toxicity none of the analogs have passed clinical evaluation. As a result, the intensity in the design, synthesis, and development of novel analogs of the duocarmycins has continued. Accordingly, in this review, which covers a period from the 1990s through the present time, the design and synthesis of duocarmycin SA are described along with the synthesis of novel and highly cytotoxic analogs that lack the chiral center. Examples of achiral analogs of duocarmycin SA described in this review include seco-DUMSA (39 and 40), seco-amino-CBI-TMI (13, Centanamycin), and seco-hydroxy-CBI-TMI (14). In addition, another novel class of biologically active duocarmycin SA analogs that contained the seco-iso-cyclopropylfurano[2,3-e]indoline (seco-iso-CFI) and seco-cyclopropyltetrahydrofurano[2,3-f]quinoline (seco-CFQ) DNA alkylating submit was also designed and synthesized. The synthesis of seco-iso-CFI-TMI (10, Tafuramycin A) and seco-CFQ-TMI (11, Tafuramycin B) is included in this review.
2. Nitroreductase-based GDEPT
William A Denny Curr Pharm Des . 2002;8(15):1349-61. doi: 10.2174/1381612023394584.
Nitroreductases that metabolise aromatic nitro groups to hydroxylamines are attractive as enzymes for GDEPT because of the very large electronic change that this metabolism generates, providing an efficient switch that can be exploited to generate potent cytotoxins. While nitroreductase enzymes are widespread, nearly all the work using these in GDEPT has been with the nfsB gene product of Escherichia coli, an oxygen-insensitive flavin mononucleotide nitroreductase (NTR). Four classes of prodrugs for NTR have been described; dinitroaziridinylbenzamides, dinitrobenzamide mustards, 4-nitrobenzylcarbamates and nitroindolines. While some quinones are excellent substrates for NTR, none have been identified as potential GDEPT prodrugs. The most widely studied prodrug used for GDEPT in conjunction with NTR is the dinitroaziridinylbenzamide CB 1954. This shows high selectivity (>1000-fold) in cell lines transfected with NTR, has potent and long-lasting inhibition of NTR-transfected tumours in mice, and is in Phase I trial in conjunction with virally-delivered NTR enzyme. The related mustard SN 23862 has similar selectivity and superior bystander effects in animal models. Nitrobenzyl carbamates of a variety of cytotoxic amines (including aniline mustards, enediynes, duocarmycin analogues, pyrrolobenzodiazepines and the antitumour antibiotics doxorubicin, actinomycin D and mitomcyin C) are metabolised efficiently by NTR to the hydroxylamines, that fragment to release the amines. Nitroindoline derivatives of duocarmycins also show moderate selectivity for NTR-transfected cell lines in culture.
3. Duocarmycin-based antibody-drug conjugates as an emerging biotherapeutic entity for targeted cancer therapy: Pharmaceutical strategy and clinical progress
Hui Zhao, Rachel Hudson, Ming-Hai Wang, Xiang-Min Tong, Hang-Ping Yao Drug Discov Today . 2021 Aug;26(8):1857-1874. doi: 10.1016/j.drudis.2021.06.012.
Duocarmycins are a class of DNA minor-groove-binding alkylating molecules. For the past decade, various duocarmycin analogues have been used as payloads in the development of antibody-drug conjugates (ADCs). Currently, more than 15 duocarmycin-based ADCs have been studied preclinically, and some of them such as SYD985 have been granted Fast-Track Designation status. Nevertheless, progress in duocarmycin-based ADCs also faces challenges, with setbacks including the termination of BMS-936561/MDX-1203. In this review, we discuss issues associated with the efficacy, pharmacokinetic profile, and toxicological activity of these biotherapeutics. Furthermore, we summarize the latest advances in duocarmycin-based ADCs that have different target specificities and linker chemistries. Evidence from preclinical and clinical studies has indicated that duocarmycin-based ADCs are promising biotherapeutics for oncological application in the future.

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