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Over the years, this research
group has accomplished the total synthesis of approximately
four dozen natural products. Individual natural products that
we choose as targets range from structurally simple to complex.
They are selected as objectives because their architectures
are novel and have not been synthesized previously. Many also
have important biological activities. Lactonamycin (1) serves
as a case in point, because it not only possesses an unprecedented
structure, but also because it has outstanding antibiotic
activity against bacteria that are resistant to current antibiotics.
Natural products whose synthesis we have completed of late
include azacridone A (2), nigellicine (3), HKI 0231B (4),
pterocellin A (5), nostocine A (6), pseudoiodinine (7) and
santiagonamine (8).

A second main area of research is the design and synthesis
of what might be called molecular devices. The initial example
was the first molecular brake (9->10). More recently, we
reported the results of our studies on molecular “ratchets”
(11). We have now also devised a related system that achieves
unidirectional rotation. To wit, we have accomplished a prototype
(12) of a molecular motor by using the energy-rich chemical
phosgene to power clockwise-only rotation in this molecule.
Work is currently underway to optimize the system so that
it rotates continuously (13) (see
animation) and rivals the speed of its biological and
mechanical counterparts.

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BS (Honors) 1964, Holy Cross College
Ph.D. 1968, University of California, Berkeley
(C. H. Heathcock)
Postdoc 1968-9, Brandeis University (J. B.
Hendrickson)
NSF Trainee 1965-68
NIH Postdoctoral Fellow 1968-1969
NIH Research Career Development Award 1975-80
Thomas A. and Margaret A. Vanderslice Professor
of Chemistry 1989-
Arthur C. Cope Scholar Award (American Chemical
Society) 1996
Teacher of the Year Award (Boston College
Chapter of Phi Betta Kappa) 2004 |
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