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Synthesis and biological evaluation of novel larotaxel analogues
Sumei Ren1, Yujie Wang1, Junfei Wang1
1Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, 201203, China.
Abstract:
Taxoids are a class of successful drugs and have been successfully used in chemotherapy for a variety of cancer types. However, despite the hope and promises that these taxoids have engendered, their utility is hampered by some clinic limitations. Extensive structure-activity relationship (SAR) studies of toxoids have been performed in many different laboratories. Whereas, SAR studies that based on the new-generation toxoid, larotaxel, have not been reported yet. In view of the advantages in preclinical and clinical data of larotaxel over former toxoids, new taxoids that strategicly modified at the C3'/C3'-N and C2 positions of larotaxel were designed, semi-synthesized, and examined for their potency and efficacy in vitro. As a result, it has been shown that the majority of these larotaxel analogues are exceptionally potent against both drug-sensitive tumor cells and tumor cells with drug resistance arising from P-glycoprotein over expression. Further in vivo antitumor efficacies investigations revealed A2 might be a potent antitumor drug candidate for further preclinical evaluation.
Insights
New larotaxel analogues show potent anticancer activity against drug-sensitive and resistant tumors. Compound A2 demonstrates significant potential as a candidate for further preclinical evaluation in cancer chemotherapy.
Area of Science:
- Medicinal Chemistry
- Pharmacology
- Oncology
Background:
- Taxoids are vital chemotherapy agents but face clinical limitations.
- Structure-activity relationship (SAR) studies are crucial for drug development.
- Larotaxel, a next-generation taxoid, shows promising preclinical and clinical data.
Purpose of the Study:
- To design, synthesize, and evaluate novel larotaxel analogues.
- To investigate the anticancer potency and efficacy of modified taxoids.
- To identify potential drug candidates for overcoming cancer drug resistance.
Main Methods:
- Semi-synthesis of new taxoids with modifications at C3'/C3'-N and C2 positions of larotaxel.
- In vitro evaluation of compound potency against various tumor cell lines.
- In vivo assessment of antitumor efficacy for promising candidates.
Main Results:
- Most synthesized larotaxel analogues exhibited exceptional potency against drug-sensitive tumor cells.
- The novel analogues were also effective against tumor cells overexpressing P-glycoprotein, indicating resistance circumvention.
- Compound A2 showed significant in vivo antitumor efficacy.
Conclusions:
- Strategic modifications of larotaxel can yield highly potent anticancer agents.
- Larotaxel analogues demonstrate efficacy against both sensitive and multidrug-resistant cancers.
- Compound A2 is a promising candidate for further preclinical development in cancer therapy.
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