@article { ISI:000287163000011,
	title = {Construction of the 5,10b-phenanthridine skeleton using [3+2]-cycloaddition of a non-stabilized azomethine ylide: total synthesis of (+/-)-maritidine and (+/-)-crinine alkaloids},
	journal = {European Journal of Organic Chemistry},
	number = {4},
	year = {2011},
	month = {FEB},
	pages = {740-750},
	publisher = {WILEY-V C H VERLAG GMBH},
	address = {PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY},
	abstract = {<p>Vicinal quaternary and tertiary stereocenters of the 5,10b-phenanthridine skeleton 1 are constructed simultaneously in one step by the [3+2]-cycloaddition of non-stabilized azomethine ylide 9, generated by sequential double desilylation of 10 utilizing silver(I) fluoride as a one-electron oxidant. The regioas well as stereochemical origin of this cycloaddition reaction is explained through a favorable transition state 9{\textquoteright}{\textquoteright}. The strategy is successfully applied for the total synthesis of the biologically active alkaloids (+/-)-maritidine (1a), (+/-)-crinine (1b), and their analogues (1d, 1e, and 1f).</p>},
	keywords = {alkaloids, Azomethine ylides, Cycloaddition, Natural products, Ylides},
	issn = {1434-193X},
	doi = {10.1002/ejoc.201001263},
	author = {Pandey, Ganesh and Gupta, Nishant R. and Gadre, Smita R.}
}
@article {46849,
	title = {Synthesis of 2-azabicyclo[m.n.0]-alkanes and their application towards the synthesis of strychnos and stemona classes of alkaloids},
	journal = {European Journal of Organic Chemistry},
	volume = {2020},
	year = {2020},
	month = {JUL },
	pages = {3883-3888},
	type = {Article},
	abstract = {<p>2-Azabicyclo[m.n.0]alkane ring systems, the conceptual precursors towards the synthesis of Strychnos and Stemona classes of alkaloids, were synthesized from tert-butyl 2-(phenylsulfonyl)-7-aza-bicyclo[2.2.1]hept-2-ene-7-carboxylate by alkyl Grignard reaction and intramolecular cyclisation of the in situ generated ring opening product 2. The synthesized cis-hexahydroindole 3 and cis-octahydro-benzo[b]azepine 5 scaffolds were utilized to construct the advanced intermediates 25 and 35, respectively, towards the synthesis of the corresponding Strychnos and Stemona classes of alkaloids.</p>
},
	keywords = {alkaloids, amines, Grignard reaction, Michael addition, Natural products},
	issn = {1434-193X},
	doi = {10.1002/ejoc.202000507, Early Access Date = MAY 2020},
	author = {Majumder, Binoy and Pandey, Ganesh}
}
