A relay strategy actuates pre-existing trisubstituted olefins in monoterpenoids for cross metathesis with trisubstituted alkenes
File(s)acs.joc.0c00067.pdf (1.26 MB)
Published version
Author(s)
Type
Journal Article
Abstract
A retrosynthetic disconnection-reconnection analysis of epoxypolyenes – substrates that can undergo cyclization to podocarpane-type tricycles – reveals relay-actuated 6,7-functionalized monoterpenoid alcohols for ruthenium benzylidene catalyzed olefin cross metathesis with homoprenyl benzenes. Successful implementation of this approach provided several epoxypolyenes as expected (E:Z, ca. 2-3:1). The method is further generalized for the cross metathesis of pre-existing trisubstituted olefins in other relay-actuated 6,7-functionalized monoterpenoid alcohols with various other trisubstituted alkenes to form new trisubstituted olefins. Epoxypolyene cyclization of an enantiomerically pure, but geometrically impure, epoxypolyene substrate provides an enantiomerically pure, trans-fused, podocarpane-type tricycle (from the E-geometrical isomer).
Date Issued
2020-03-19
Date Acceptance
2020-03-05
Citation
The Journal of Organic Chemistry, 2020, 85 (7), pp.4906-4917
ISSN
0022-3263
Publisher
American Chemical Society
Start Page
4906
End Page
4917
Journal / Book Title
The Journal of Organic Chemistry
Volume
85
Issue
7
Copyright Statement
© 2020 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY)
License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html), which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.
License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html), which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://pubs.acs.org/doi/abs/10.1021/acs.joc.0c00067
Grant Number
EP/P030742/1
Subjects
Science & Technology
Physical Sciences
Chemistry, Organic
Chemistry
RING-CLOSING METATHESIS
FORMAL SYNTHESIS
ASYMMETRIC DIHYDROXYLATION
ALLYLIC HALIDES
ALKYLATION
EFFICIENT
ALCOHOLS
DITERPENOIDS
CYCLIZATIONS
SELECTIVITY
0304 Medicinal and Biomolecular Chemistry
0305 Organic Chemistry
Organic Chemistry
Publication Status
Published
Date Publish Online
2020-03-19