Highlights from the Synthesis of Gibberellins:
Highlights from the Synthesis of Gibberellins:
Highlights from the Synthesis of Gibberellins:
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HO 2C<br />
CH 3 H<br />
H<br />
CH 3<br />
CHO<br />
GA 12-aldehyde<br />
R<br />
O<br />
HO 2C<br />
CO<br />
OH<br />
-very complex<br />
H<br />
-parallel pathways<br />
Me<br />
-organism dependent<br />
(fungal or higher order plants)<br />
-converge to common GA<br />
GA n<br />
R<br />
OC<br />
Me<br />
CH 3 H<br />
H<br />
CH 3<br />
H<br />
CO 2H<br />
CO 2H<br />
many complex, as yet incompletely<br />
defined, oxidative processes<br />
15-biosyn<strong>the</strong>sis6.cdx 2/5/04 12:40 PM<br />
Gibberellin Biosyn<strong>the</strong>sis: Stage C<br />
O<br />
H<br />
H<br />
CO 2H<br />
R<br />
R<br />
and/or<br />
HO<br />
R<br />
HO 2C<br />
O<br />
R<br />
HO2C CO<br />
Me<br />
CH 3 H<br />
H<br />
CH 3<br />
H<br />
H<br />
CH 3<br />
CHO<br />
early or late oxidations <strong>of</strong> C3, C13<br />
H<br />
OH H<br />
CO 2H<br />
CO 2H<br />
R<br />
R<br />
OH<br />
R<br />
HO 2C<br />
HO<br />
R<br />
HO2C R<br />
HO2C CH 3 H<br />
H<br />
CH 3<br />
R = H, OH<br />
O<br />
H<br />
CH 3<br />
H<br />
CH 3<br />
oxidative decarboxlyation<br />
CO 2H<br />
H<br />
CO 2H<br />
H<br />
CO 2H<br />
R<br />
R<br />
R
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