Many plants of the Euphorbiaceae (spurges) produce toxic and/or irritating substances which belong to a small family of closely related diterpene skeletons. The biological activities of these compounds are impressive, including the tumor-promoting properties of various phorbol esters, the tumor-promoting and antileukemic activity of lathyranoid compounds, and the antileukemic activity of jatrophone and related jatrophane dietepenoids. It has been suggested that these compounds might derive their biological activity from an ability to bind at prostaglandin receptor sites on cell membranes, and undergo reaction with nearby nucleophilic centers. We propose to conduct a chemical synthesis of two representative diterpenoids of this group. This will allow us to begin development of the methodology required for synthesis of the entire family of diterpenoids. Our syntheses are designed to produce the natural enantiomers of our objectives; we believe that this is essential at least until the stereospecificity of the receptor site(s) is established. Through bioassay of selected synthetic intermediates, we hope to increase our understanding of the mechanism(s) responsible for the observed biological activity. Ultimately, this may lead to the ability to design related substances with enhanced antileukemic activity, and to better understanding of the process of tumor promotion.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
5R01CA033743-03
Application #
3171533
Study Section
Medicinal Chemistry Study Section (MCHA)
Project Start
1983-02-01
Project End
1986-01-31
Budget Start
1985-02-01
Budget End
1986-01-31
Support Year
3
Fiscal Year
1985
Total Cost
Indirect Cost
Name
University of Iowa
Department
Type
Schools of Arts and Sciences
DUNS #
041294109
City
Iowa City
State
IA
Country
United States
Zip Code
52242