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Schulte A, Saito S, Wünsch B. Stereoselective Synthesis ofcis,cis-Configured Vicinal Triamines. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402685] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Savaspun K, Au CWG, Pyne SG. Total Synthesis of Hyacinthacines B3, B4, and B5 and Purported Hyacinthacine B7, 7-epi-Hyacinthacine B7, and 7a-epi-Hyacinthacine B3 from a Common Precursor. J Org Chem 2014; 79:4569-81. [DOI: 10.1021/jo5005923] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kongdech Savaspun
- School
of Chemistry, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Christopher W. G. Au
- School
of Chemistry, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Stephen G. Pyne
- School
of Chemistry, University of Wollongong, Wollongong, New South Wales 2522, Australia
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Krow GR, Yu F, Sender M, Gandla D, Lin G, DeBrosse C, Ross CW. Introduction of C(5/6) side chains onto 2-azabicyclo[2.1.1]hexanes via a 6-anti-bromo-5-anti-hydroxy derivative. CAN J CHEM 2012. [DOI: 10.1139/v11-112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oxidation of the title bromoalcohol provided the strained ketone, 5-bromo-6-oxo-2-azabicyclo[2.1.1]hexane. Additions of nucleophiles to either this or the debrominated ketone have been used to introduce 5(6)-syn-alkyl and aryl groups, 5(6)-alkylidene linkages, and 5(6)-anti-alkyl and acyl substituents. Facial selectivity is for additions to the 6-bromo-5-ketone and 5-alkylidene azabicycles to occur from the face syn to the nitrogen atom. The bromine atom of the title alcohol has also been replaced by a 6-anti-(1-hydroxyethyl) substituent using a directed radical addition process. The stereoselective functionalization reactions expand the range of available methano-bridged pyrrolidines.
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Affiliation(s)
- Grant R. Krow
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Fang Yu
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Matthew Sender
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Deepa Gandla
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Guoliang Lin
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Charles DeBrosse
- Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Charles W. Ross
- Department of Medicinal Chemistry, Merck Research Laboratories, Merck & Co., Inc., West Point, PA 19486-004, USA
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