Epigibberic acid

Gibberic acid must therefore have the stereochemistry shown in (LVII) [Stork and Newman (32) have reached the same conclusion by similar arguments], and epigibberic acid must be the 4b-epimer of (LVII). 

Gibberellins and their degradation products possess characteristic tetracyclic carbon frameworks. I synthesized ( )-14,13 ( )-15,14 ( )-16,15 and ( )-1716 (Figure 2.4). In this section I will detail the synthesis of ( )-epigibberic acid (18), completed in October 1962, just a month before my wedding ceremony with my wife Keiko nee Suzuki).17,18... 

Figure 2.5 Synthesis of ( )-epigibberic acid (1). Reprinted with permission of Shokabo Publishing Co., Ltd...

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