@article {Gimisis1993b,
	title = {{A HIGHLY EFFICIENT SYNTHESIS OF 3-METHYLCHOLANTHRENE}},
	journal = {J. Org. Chem.},
	volume = {58},
	number = {25},
	year = {1993},
	month = {dec},
	pages = {7158{\textendash}7161},
	abstract = {A five-step synthesis of 3-methylcholanthrene (1) has been achieved starting from 5-methylhomophthalic anhydride and N,N-diethyl-1-naphthamide in 55{\%} over all yield. Treatment of a solution of the preformed lithium enolate of 5-methylhomophthalic anhydride (3) with an equimolar solution of 2-lithio-1-naphthamide (4), followed by acid hydrolysis, provides cleanly the spirobislactone 5 in 80{\%} overall yield. In addition, the synthesis features a unique, highly selective double Friedel-Crafts cyclization of the aryl diacid 2 with PPA to give rise, after acetylation, to keto acetate 6.},
	isbn = {0022-3263},
	issn = {0022-3263},
	doi = {10.1021/jo00077a045},
	url = {http://pubs.acs.org/doi/abs/10.1021/jo00077a045},
	author = {Gimisis, Thanasis and Koreeda, Masato}
}
