p. 3902 - 3907
(1995)p. 414 - 418
(2013/07/25)(2010/02/07)
2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-(5-methanesulfonylmethyl-pyrazin-2-yl)-propionamide
2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-(5-hydroxymethyl-pyrazin-2-yl)propionamide
5-[2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-propionylamino]-pyrazine-2-carboxylic acid methyl ester