A concise synthesis of the cortistatin core

Area of Science:

• Organic Chemistry
• Medicinal Chemistry
• Natural Product Synthesis

Background:

• Cortistatin steroidal alkaloids are a class of natural products with potential therapeutic applications.
• Developing efficient synthetic routes is essential for accessing these complex molecules for further study.

Purpose of the Study:

• To establish a concise and convergent synthetic route to the core matrix of cortistatin steroidal alkaloids.
• To enable the total synthesis of cortistatins and facilitate structure-activity relationship (SAR) studies.

Main Methods:

• Utilized the Snieckus cascade methodology for key transformations.
• Employed Masamune alkylative dearomatization for constructing the steroidal core.
• Designed a convergent synthetic strategy for efficiency.

Main Results:

• Successfully synthesized the core matrix of cortistatin steroidal alkaloids.
• Demonstrated the utility of the Snieckus cascade and Masamune alkylative dearomatization in this synthesis.
• Established a foundation for diverted total synthesis approaches.

Conclusions:

• The developed synthetic route is efficient and convergent, providing access to the cortistatin steroidal alkaloid core.
• This methodology is amenable to the total synthesis of cortistatins and the development of SAR programs.
• The strategy offers a valuable platform for medicinal chemistry efforts targeting cortistatin analogs.