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C24 and C25 substituted marcfortine A derivatives
1Animal Health Discovery Research, Pharmacia & Upjohn, Inc., Kalamazoo, MI 49001, USA.
Bioorganic & Medicinal Chemistry Letters
|January 5, 1999
Summary
Researchers explored the unique dioxepinoindole ring in marcfortine A by synthesizing analogs. Most analogs lacked anthelmintic activity, indicating the importance of the original substitution pattern for biological function.
Area of Science:
- Natural Product Chemistry
- Medicinal Chemistry
- Organic Synthesis
Background:
- Marcfortine A possesses a unique dioxepinoindole ring system, a novel scaffold in natural products.
- The C24-C25 olefin is a key structural feature of marcfortine A.
Purpose of the Study:
- To investigate the structure-activity relationship of marcfortine A.
- To determine the significance of the C24-C25 olefin substitution pattern for anthelmintic activity.
Main Methods:
- Synthesis of various marcfortine A analogs with modifications at the C24-C25 olefin.
- Anthelmintic activity screening of synthesized compounds.
Main Results:
- The synthesized analogs showed limited anthelmintic activity.
- Compound 5 was an exception, but most other analogs were inactive.
Conclusions:
- The substitution pattern of the C24-C25 olefin in marcfortine A is crucial for its anthelmintic properties.
- Further research may focus on analogs that retain or mimic this specific structural motif.