Cyclopentane derivatives

Details Cyclopentane derivatives Cyclopentane derivatives

1988-04-27

1989-07-11

Brust, Joseph Paul

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

560231, 568579, 568591, C07D30304, C07C 69145, C07C 43305

Patent

active

048473901

ABSTRACT:
Novel cyclopentane derivatives which are useful as an intermediate for the preparation of N-(L-aspartyl)-N'-(2,2,5,5-tetramethylcyclopentanecarbonyl)-R-1,1-diaminoe thane are represented by the formula (I) ##STR1## wherein R.sub.1 is hydrogen and R.sub.2 is cyano, formyl, carbamoyl, alkanesulfonyloxy, or ##STR2## wherein R.sub.3 and R.sub.4 are the same or different and represent alkyl, substituted alkyl or R.sub.1 and R.sub.2 are combined to be methylsulfinylmethylene, acetoxymethylthiomethylene, halomethylthiomethylene, methylthiomethylene, alkoxymethylene, or --CH.sub.2 --O--.

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patent: 4622418 (1986-11-01), Barnett et al.
Huguet, et al.; Helv. Chim. Acta, 65, (1982), pp. 2413-2421.

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