Pfizer Handbook of Microbial Metabolites 162 



322 Gibberellenic Acid, CjoHo^Op,, colorless crystals, m.p. 185° (dec). 

 Strong U.V. absorption at 253 lU/x (e = 19,200). 



COOH 



Fusarium moniliforme 



Koert Gerzon, Harold L. Bird, Jr. and Don O. Woolf, Jr., 

 Experientia 13 487 (1957). 



323 Gibberellic Acid (Gibberellln A;., Gibberellln X), C19H22O6, col- 

 orless crystals, m.p. 235° (dec), [a]r,-" +92°. 

 Proposed complete stereochemical structure: 



HO 



P. J. Curtis and B. E. Cross, Chem. and Ind., 1066 (1954). 

 (Isolation) 



B. E. Cross, John Frederick Grove, J. MacMillan and T. P. C. 

 Mulholland, Chem. and Ind., 954 (1956). (Structure) 



Brian E. Cross, /. Chem. Soc, 4670 (1954). 



Nobutaka Takahashi, Yasuo Seta, Hiroshi Kitamura and 

 Yusuke Sumiki, Bull. Agr. Chem. Soc. (Japan) 23 405 (1959). 



Hiroshi Kitamura, Yasuo Seta, Nobutaka Takahashi, Akira 

 Kawarada_and Yusuke Sumiki, ibid. 23 408 (1959). 



Yasuo Seta, Nobutaka Takahashi, Akira Kawarada, Hiroshi 

 Kitamura and Yusuke Sumiki, ibid. 23 412 (1959). 



Nobutaka Takahashi, Yasuo Seta, Hiroshi Kitamura, Akira 

 Kawarada and Yusuke Sumiki, ibid. 23 493 (1959). 



Yasuo Seta, Nobutaka Takahashi, Hiroshi Kitamura, Ma- 

 koto Takai, Sahuro Tamura and Yusuke Sumiki, ibid. 23 499 

 (1959). 



Nobutaka Takahashi, Yasuo Seta, Hiroshi Kitamura and 

 Yusuke Sumiki, ibid. 23 509 (1959). 



B. E. Cross, J. F. Grove, P. McCloskey and T. P. C. Mulhol- 

 land, Chem. and Ind., 1345 (1959); B. E. Cross, John Fred- 

 erick Grove, J. MacMillan, J. S. Moffatt, T. P. C. Mulholland 

 and J. C. Seaton, Proc. Chem. Soc, 302 (1959). 



