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Title: Synthesis of Cycloprodigiosin Identifies the Natural Isolate as a Scalemic Mixture

Journal Article · · Organic Letters

We prepared the enantiomers of the natural product cycloprodigiosin using an expedient five-step synthetic sequence that takes advantage of a Schöllkopf–Barton–Zard (SBZ) pyrrole annulation with a chiral isocyanoacetate and a nitrocyclohexene derivative. Using chiral HPLC and X-ray crystallographic analyses of the synthetically prepared material and natural isolate (isolated from the marine bacterium Pseudoalteromonas rubra), naturally occurring cycloprodigiosin was determined to be a scalemic mixture occurring in an enantiomeric ratio of 83:17 (R)/(S) at C4'.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231; S10-RR027172; 1341894
OSTI ID:
1257348
Journal Information:
Organic Letters, Vol. 17, Issue 14; ISSN 1523-7060
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

References (28)

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Elimination of Butylcycloheptylprodigiosin as a Known Natural Product Inspired by an Evolutionary Hypothesis for Cyclic Prodigiosin Biosynthesis journal September 2013
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C–H activation is a Reiske business journal April 2011
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C–H Methylation of Heteroarenes Inspired by Radical SAM Methyl Transferase journal March 2014
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Two-step synthesis of the bipyrrole precursor of prodigiosins journal April 2006
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Cited By (4)

Preparation of Cyclic Prodiginines by Mutasynthesis in Pseudomonas putida KT2440 journal May 2018
Synthesis of Highly Enantio-Enriched Heliespirones A and C by a Diastereoselective Aromatic Claisen Rearrangement journal January 2018
Culturing marine bacteria from the genusPseudoalteromonason a cotton scaffold alters secondary metabolite production journal October 2018
Oxidative cyclization of prodigiosin by an alkylglycerol monooxygenase-like enzyme journal September 2017


Figures / Tables (6)


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