@article { ISI:000297732400016,
	title = {Enantioselective total syntheses of (-)-isonitramine, (-)-sibirine, and (+)-nitramine by ring-closing metathesis},
	journal = {European Journal of Organic Chemistry},
	number = {36},
	year = {2011},
	month = {DEC},
	pages = {7372-7377},
	publisher = {WILEY-V C H VERLAG GMBH},
	address = {PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY},
	abstract = {<p>Concise enantioselective total syntheses of naturally occurring 2-azaspiro[5,5]undecan-7-ol (Nitraria) alkaloids viz. ()-isonitramine, ()-sibirine, and (+)-nitramine are accomplished in 42, 38, and 25?\% overall yield, respectively, in six steps starting from enantiomerically pure (S)-methyl 3-allyl-2-oxo-1,2,3,6-tetrahydropyridine-3-carboxylate (\&gt;99?\%?ee). The key feature of the syntheses involves diastereoselective HosomiSakurai allylation followed by ring-closing metathesis.</p>},
	keywords = {Alk-aloids, Allylation, Amino alcohols, Metathesis, Total synthesis},
	issn = {1434-193X},
	doi = {10.1002/ejoc.201101256},
	author = {Pandey, Ganesh and Kumara, Prasanna C. and Burugu, Shiva Kumar and Puranik, Vedavati G.}
}
@article { ISI:000306670200022,
	title = {InCl3-mediated addition of indole to isatogens: an expeditious synthesis of 13-deoxy-isatisine A},
	journal = {Chemistry-A European Journal},
	volume = {18},
	number = {31},
	year = {2012},
	month = {JUL},
	pages = {9601-9611},
	publisher = {WILEY-V C H VERLAG GMBH},
	address = {BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY},
	abstract = {<p>A strategy directed towards the total synthesis of isatisine A that involves several late-stage metal-catalyzed transformations that address the key carboncarbon and carbonheteroatom bond formations has been developed. As a part of this strategy, methods for the addition of indoles to isatogens that lead selectively to either 2,2-disubstituted N-hydroxyindolin-3-one or 2,2-disubstituted indolin-3-one compounds have been developed by employing InCl3 as a catalyst or as the reagent. The present methods provide the first examples of the additions of indoles to the isatogen nucleus. To demonstrate its viability, the synthesis of 13-deoxy-isatisine A has been completed in ten steps from a known and easily available lactone.</p>},
	keywords = {indium, indoles, isatogens, Natural products, Total synthesis},
	issn = {0947-6539},
	doi = {10.1002/chem.201103604},
	author = {Kumar, Chepuri V. Suneel and Puranik, Vedavati G. and Ramana, Chepuri V.}
}
