Nitrogen-bearing natural products comprise a large number of biologically active molecules, often serving as effective pharmaceuticals in the treatment of disease. Of these, the hasubanan alkaloids possess promising biological activity, exhibiting antihepatotoxic and analgesic properties. In addition, these alkaloids present an intriguing structural architecture characterized by a densely functionalized propellane core. As a result of their biological and structural features, the hasubanans are an attractive target for total synthetic endeavors. The goal of the proposed research is to complete the total synthesis of two members of the hasubanan alkaloids, periglaucines A and B. Key to our synthetic strategy is the development of a diastereoselective 1,2-addition of nucleophiles to quinone imines derived from a chiral auxiliary. The resulting aminodienone products are expected to serve as versatile building blocks in the preparation of more complex propellane alkaloids. By employing a unified synthetic strategy, it is expected that a variety hasubanan alkaloids and derivatives can be readily prepared. With synthetic access to such alkaloids, it will be possible to facilitate studies aimed at elucidating their biological pathways and to potentially develop novel, more potent natural products.

Public Health Relevance

Natural products have long served as a rich source of pharmaceutical drugs utilized for the treatment of many diseases. Studies aimed at efficiently preparing such molecules ultimately helps facilitate their availability to patients worldwide. Additionally, this type of research can also lead to the discovery of novel, more potent pharmaceutical drugs.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Predoctoral Individual National Research Service Award (F31)
Project #
5F31GM098025-03
Application #
8516064
Study Section
Special Emphasis Panel (ZRG1-F04A-G (20))
Program Officer
Gaillard, Shawn R
Project Start
2011-08-01
Project End
2014-07-31
Budget Start
2013-08-01
Budget End
2014-07-31
Support Year
3
Fiscal Year
2013
Total Cost
$42,232
Indirect Cost
Name
California Institute of Technology
Department
Chemistry
Type
Schools of Engineering
DUNS #
009584210
City
Pasadena
State
CA
Country
United States
Zip Code
91125