@article {42728,
	title = {Mitsunobu and related reactions: advances and applications},
	journal = {Chemical Reviews},
	volume = {109},
	year = {2009},
	month = {APR},
	pages = {2551{\textendash}2651},
	doi = {10.1021/cr800278z},
	author = {Swamy, K. C. Kumara and Kumar, N. N. Bhuvan and Balaraman, Ekambaram and Kumar, K. V. P. Pavan}
}
@article {42715,
	title = {Alkynyl and phosphonyl substituted nucleobases: a case of thermally induced conformational polymorphism},
	journal = {Crystal Growth \& Design},
	volume = {11},
	year = {2011},
	month = {APR},
	pages = {2302{\textendash}2310},
	abstract = {<p>Substituted nucleobases with alkynyl and phosphonyl groups were investigated in the context of supramolecular interactions and possible use toward synthesis of nucleoside phosphonic acids (NPAs). The adeninyl compound (adeninyl-N-9)-CH2CH2CH2CH2C=CH exhibits conformational polymorphism as revealed by X-ray structures determined at 200 and 298 K. Interestingly, in the compound (adeninyl-N-9)-(CH2)15CH3, the long aliphatic carbon chain does not show disorder. A rather unusual bending of alkyl chain, likely due to C{\textendash}H{\textperiodcentered}{\textperiodcentered}{\textperiodcentered}O interactions, is observed in the case of the thymine compound (thyminyl)-CH2CH2CH2C=CH that possesses a terminal alkyne group. The powerful hydrogen bond acceptor property of the phosphoryl oxygen (P=O) does not perturb (unless assisted by other hydrogen bonding partners) the homo base-pairing in the structures of most of the phosphonyl substituted nucleobases studied.</p>},
	doi = {10.1021/cg101737x},
	author = {Swamy, K. C. Kumara and Allu, Srinivasarao and Srinivas, Venu and Balaraman, Ekambaram and Kumar, K. V. P. Pavan}
}
