@article { ISI:000231751000005, title = {Efficient total synthesis of iso-cladospolide B and cladospolide B}, journal = {Tetrahedron Letters}, volume = {46}, number = {39}, year = {2005}, month = {SEP}, pages = {6625-6627}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

An efficient synthesis of iso-cladospolide B and cladospolide B has been achieved using Jacobsen{\textquoteright}s hydrolytic kinetic resolution (HKR), Sharpless asymmetric dihydroxylation and Yamaguchi macrolactonization as the key steps. (c) 2005 Elsevier Ltd. All rights reserved.

}, keywords = {cladospolide B, Hydrolytic kinetic resolution, iso-cladospolide B, sharpless asymmetric dihydroxylation, Yamaguchi macrolactonization}, issn = {0040-4039}, doi = {10.1016/j.tetlet.2005.07.153}, author = {Pandey, SK and Kumar, P} } @article { ISI:000227928200058, title = {Efficient total synthesis of sapinofuranone B}, journal = {Journal of Organic Chemistry}, volume = {70}, number = {7}, year = {2005}, month = {APR}, pages = {2843-2846}, publisher = {AMER CHEMICAL SOC}, type = {Article}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, abstract = {

An efficient enantioselective synthesis of sapinofuranone B (1) using Sharpless asymmetric dihydroxylation, Sonogashira coupling, and Wittig olefination as the key steps is described.

}, issn = {0022-3263}, doi = {10.1021/jo048087k}, author = {Kumar, P and Naidu, SV and Gupta, P} } @article { ISI:000231661800039, title = {Enantioselective synthesis of tarchonanthuslactone via iterative hydrolytic kinetic resolution}, journal = {Tetrahedron Letters}, volume = {46}, number = {38}, year = {2005}, month = {SEP}, pages = {6571-6573}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

A short and practical enantioselective synthesis of tarchonanthuslactone has been achieved in high diastereomeric excess using iterative Jacobsen{\textquoteright}s hydrolytic kinetic resolution and ring closing metathesis as the key steps. (c) 2005 Elsevier Ltd. All rights reserved.

}, keywords = {Jacobsen{\textquoteright}s hydrolytic kinetic resolution, Ring closing metathesis, tarchonanthuslactone}, issn = {0040-4039}, doi = {10.1016/j.tetlet.2005.07.056}, author = {Gupta, P and Naidu, SV and Kumar, P} } @article { ISI:000229484600033, title = {Stereoselective syntheses of (+)-alpha- and (-)-beta-conhydrine from L-aspartic acid}, journal = {Tetrahedron Letters}, volume = {46}, number = {23}, year = {2005}, month = {JUN}, pages = {4091-4093}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

An efficient synthesis of (+)-alpha-conhydrine 1 and (-)-beta-conhydrine 2 has been achieved by. diastereo selective alkylation of an amino aldehyde derivative 7 with ethylmagnesium bromide or diethylzinc. (c) 2005 Elsevier Ltd. All rights reserved.

}, keywords = {Alkylation, conhydrine, Grignard reaction, Piperidine alkaloids, stereoselectivity}, issn = {0040-4039}, doi = {10.1016/j.tetlet.2005.04.013}, author = {Pandey, SK and Kumar, P} } @article { ISI:000227506100040, title = {Stereoselective synthesis of (+)-boronolide}, journal = {Tetrahedron Letters}, volume = {46}, number = {12}, year = {2005}, month = {MAR}, pages = {2129-2131}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

An efficient enantio- and stereocontrolled total synthesis of (+)-boronolide from valeralclehyde is described. The key steps include a Sharpless asymmetric dihydroxylation, a chelation controlled Grignard reaction followed by Sharpless asymmetric epoxidation and a ring closing metathesis. (C) 2005 Elsevier Ltd. All rights reserved.

}, issn = {0040-4039}, doi = {10.1016/j.tetlet.2005.01.120}, author = {Naidu, SV and Gupta, P and Kumar, P} } @article { ISI:000228983300063, title = {Total synthesis of microcarpalide}, journal = {Journal of Organic Chemistry}, volume = {70}, number = {10}, year = {2005}, month = {MAY}, pages = {4207-4210}, publisher = {AMER CHEMICAL SOC}, type = {Article}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, abstract = {

An efficient, convergent approach for the total synthesis of microcarpalide (1) is described. The synthetic strategy features the Sharpless asymmetric dihydroxylation, regioselective epoxide opening with various nucleophiles such as a lithium acetylide and cuprates derived from the vinyl stannane and the vinyl iodide for the construction of a C7-C8 trans-double bond and Yamaguchi macrolactonization as the key steps.

}, issn = {0022-3263}, doi = {10.1021/jo050193e}, author = {Kumar, P and Naidu, SV} } @article { ISI:000233089900009, title = {Wittig-horner approach for the synthesis of tamoxifen}, journal = {Synthetic Communications}, volume = {35}, number = {21}, year = {2005}, month = {MAY}, pages = {2795-2800}, publisher = {TAYLOR \& FRANCIS INC}, type = {Article}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

A stereoselective synthesis of Z -tamoxifen, a tetra-substituted alkene with antiestrogenic activity, is described. The Wittig-Horner reaction has been employed as the key step to establish the olefin stereochemistry.

}, keywords = {anticancer drug, phosphonate, stereoselectivity, Tamoxifen, Wittig-Horner reaction}, issn = {0039-7911}, doi = {10.1080/00397910500290516}, author = {Pandey, RK and Wakharkar, RD and Kumar, P} }