Studies on the Synthesis of Trachylobagibberellin Analogues (Ⅰ)──Synthesis of12.16R-Cyclogibberate

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (5): 695.

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Studies on the Synthesis of Trachylobagibberellin Analogues (Ⅰ)──Synthesis of_12.16R-Cyclogibberate

XIE Wen-Ge, CUI Yu-Xin, MA Jian-Tai, PAN Xin-Fu

Department of Chemistry, National Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000

Received:1993-10-24 Revised:1994-03-03 Online:1994-05-24 Published:1994-05-24

Abstract

Abstract: A new trachylobagibberellin analogue methyl 2.16R-cyclogibberate was synthesized from gibberellic acid(GA₃) 3 by a facile method of four steps. All intermediates were identified by MS,IRand 1D,2D NMR. The ¹H and ¹³C NMR chemical shifts and stereochemical configuration of 1 were substantiated by one-dimensional and two dimensional NMRtechniques.

Key words: Trachylobagibberellin analogue, Synthesis, Gibberellic acid GA₃, 2D NMR, 12.16R-Cyclogibberate

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XIE Wen-Ge, CUI Yu-Xin, MA Jian-Tai, PAN Xin-Fu . Studies on the Synthesis of Trachylobagibberellin Analogues (Ⅰ)──Synthesis of_12.16R-Cyclogibberate[J]. Chem. J. Chinese Universities, 1994, 15(5): 695.

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Studies on the Synthesis of Trachylobagibberellin Analogues (Ⅰ)──Synthesis of_12.16R-Cyclogibberate

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