A protection-deprotection sequence is used in order to control the formation of the exocyclic double bond of compound 10 which is further used for the synthesis of the title compounds.
DAWSON, RAYMOND M.;GODIREY, IAN M.;HOGG, RONALD W.;KNOX, JOHN R., AUSTRAL. J. CHEM., 42,(1989) N, C. 561-579
作者:DAWSON, RAYMOND M.、GODIREY, IAN M.、HOGG, RONALD W.、KNOX, JOHN R.