. The detailed examination of the fundamental chemical and biological properties of complex natural products provides critical insight to their mode of action and enables development of new approaches for treatment of human ailments. This research program aims to develop concise and efficient total chemical syntheses of structurally complex and biologically active natural products through the systematic invention, development, and application of new synthetic strategies and methodologies. The development of generalizable and highly chemo- and stereoselective transformations that enable rapid generation of molecular complexity, often inspired by biogenetic considerations, forms the basis of our approach. Of particular interest are versatile and unified approaches to families of natural products, which enable detailed chemical and biological studies. Critical to our approach is the synergistic development of new synthetic strategies that permit the stereocontrolled formation of multiple bonds and new synthetic methodologies for late-stage functionalization in complex settings. The targets are selected based on the complexity of the molecular architecture, abundance of opportunities for development of new chemical transformations, the potential for development of new generalizable strategies and methodologies, and the potential for multidisciplinary and collaborative biological investigations. This program studies the agelastatin alkaloids, their related functional derivatives, the aspidosperma indole alkaloids, including mehranine, fendleridine, and apodine subfamilies, in addition to complex dimeric aspidosperma alkaloids. These alkaloids inspire development of new and highly chemo- and stereoselective transformations relevant to assembly of complex alkaloids, and new synthetic methodology for late-stage derivatization of complex molecules. Our program provides direct access to samples of rare and precious compounds for structure validation, chemical study, and the pursuit of our collaborative biological evaluation and mechanistic studies concerning these alkaloids. The synthetic molecules accessed through this program behold great promise both as mechanistic tools and as new bioactive compounds, and are subject to systematic evaluation through our multidisciplinary collaborations concerning their translational potential for development as new treatments for human ailments.

Public Health Relevance

The detailed examination of the fundamental chemical and biological mechanism of action of natural products is critical in the development of new treatments for various human ailments. This program's central objective is the discovery, development, and application of new strategies and methodologies for the chemical synthesis of bioactive complex natural alkaloids and designed functional derivatives to enable detailed chemical and biological studies. Whereas the immediate impact of this program is access to precious and rare samples of complex alkaloids, the broader impact of our program is the establishment of precedence for the application of new chemistries in the synthesis of other natural and rationally designed molecules with therapeutic potential.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM074825-11
Application #
9250159
Study Section
Synthetic and Biological Chemistry B Study Section (SBCB)
Program Officer
Lees, Robert G
Project Start
2005-08-10
Project End
2020-01-31
Budget Start
2017-02-01
Budget End
2018-01-31
Support Year
11
Fiscal Year
2017
Total Cost
$365,040
Indirect Cost
$131,040
Name
Massachusetts Institute of Technology
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
001425594
City
Cambridge
State
MA
Country
United States
Zip Code
02142
Antropow, Alyssa H; Garcia, Nicholas R; White, Kolby L et al. (2018) Enantioselective Synthesis of (-)-Vallesine: Late-Stage C17-Oxidation via Complex Indole Boronation. Org Lett 20:3647-3650
Kang, Taek; White, Kolby L; Mann, Tyler J et al. (2017) Enantioselective Total Synthesis of (-)-Deoxoapodine. Angew Chem Int Ed Engl 56:13857-13860
Antropow, Alyssa H; Xu, Kun; Buchsbaum, Rachel J et al. (2017) Synthesis and Evaluation of Agelastatin Derivatives as Potent Modulators for Cancer Invasion and Metastasis. J Org Chem 82:7720-7731
Xu, Kun; Tian, Xuejun; Oh, Sun Y et al. (2016) The fibroblast Tiam1-osteopontin pathway modulates breast cancer invasion and metastasis. Breast Cancer Res 18:14
White, Kolby L; Mewald, Marius; Movassaghi, Mohammad (2015) Direct Observation of Intermediates Involved in the Interruption of the Bischler-Napieralski Reaction. J Org Chem 80:7403-11
Liu, Fan; Movassaghi, Mohammad (2015) Electrophilic Carbonyl Activation: Competing Condensative Cyclizations of Tryptamine Derivatives. Tetrahedron Lett 56:2995-3000
Amaike, Kazuma; Loach, Richard P; Movassaghi, Mohammad (2015) Direct C7 Functionalization of Tryptophan. Synthesis of Methyl (S)-2-((tert-Butoxycarbonyl)amino)-3-(7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indol-3-yl)propanoate. Organic Synth 92:373-385
Han, Sunkyu; Morrison, Karen C; Hergenrother, Paul J et al. (2014) Total synthesis, stereochemical assignment, and biological activity of all known (-)-trigonoliimines. J Org Chem 79:473-86
Loach, Richard P; Fenton, Owen S; Amaike, Kazuma et al. (2014) C7-derivatization of C3-alkylindoles including tryptophans and tryptamines. J Org Chem 79:11254-63
Mewald, Marius; Medley, Jonathan William; Movassaghi, Mohammad (2014) Concise and enantioselective total synthesis of (-)-mehranine, (-)-methylenebismehranine, and related Aspidosperma alkaloids. Angew Chem Int Ed Engl 53:11634-9

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