Synthesis 2010(15): 2567-2570  
DOI: 10.1055/s-0029-1218822
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Total Synthesis of (±)-Batzelladine K: A Biomimetic Approach

Nafees Ahmed, Keyur G. Brahmbhatt, Inder Pal Singh, Kamlesh K. Bhutani*
Department of Natural Products, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar, Mohali, Punjab 160062, India
Fax: +91(172)2232208; e-Mail: kkbhutani@niper.ac.in;
Further Information

Publication History

Received 29 March 2010
Publication Date:
17 June 2010 (online)

Abstract

Total synthesis of batzelladine K was achieved by a biomimetic approach. The key reactions involve two Wittig reactions of phosphoranes and aldehydes leading to an α,β-unsaturated ketone, followed by a condensation with guanidine. The synthesis was accomplished in four steps with an overall yield of 12%. The relative stereochemistry of batzelladine K was established by NOE experiments and comparison with literature values.