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The enantiomer of lactone 42 could be prepared by diborane reduction of the carboxylic acid group of 41
-
The enantiomer of lactone 42 could be prepared by diborane reduction of the carboxylic acid group of 41.
-
-
-
-
23
-
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85033829913
-
-
We are grateful to Dr. M. Parvez, University of Calgary, for X-ray structure determinations
-
We are grateful to Dr. M. Parvez, University of Calgary, for X-ray structure determinations.
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27
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1H NMR spectra of of natural (-)-papuamine (1) and its hydrochloride.
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Direct reaction of aldehyde 85 with o-bromopiperonyl amine to produce the imine failed. Under forcing conditions, only the α,β-unsaturated aldehyde formed by β-elimination of siloxy aldehyde 85 was produced
-
Direct reaction of aldehyde 85 with o-bromopiperonyl amine to produce the imine failed. Under forcing conditions, only the α,β-unsaturated aldehyde formed by β-elimination of siloxy aldehyde 85 was produced.
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