在Isobe法中,首先分別合成岡田酸的三個部分,即在C14-C15和C27-C28處斷開產生的A、B、C三個部分。然後先將B和C結合後再與A結合,就得到完整的岡田酸。全程共計106步,最長線性步驟(英語:Longest linear sequence)為54步。且三個部分均從葡萄糖衍生物的手性池(英語:Chiral pool)得到。對於結構中的螺縮酮,則是由酮二醇前體在酸中加熱反應得到[7][16][19]。
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