Steroids CCXCVII. Synthetic studies on insect hormones. Part III. An alternative synthesis of ecdysone and 22-isoecdysone.

✍ Scribed by I.T. Harrison; J.B. Siddall; J.H. Fried

• Book ID: 104235140
• Publisher: Elsevier Science
• Year: 1966
• Tongue: French
• Weight: 145 KB
• Volume: 7
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)82810-0

✦ Synopsis

The synthesis of the insect moulting hormone ecdysone (IIa) was reported in a previous communication from this laboratory. (2)

In addition, the three C-20 and 22 stereoisomers of ecdysone were obtained,(') although the method of synthesis used did not allow the assignment of stereochemistry to the latter compounds.

We now wish to record an alternative synthesis from a