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Spirocycles

  • US 5,439,914 A
  • Filed: 02/18/1994
  • Issued: 08/08/1995
  • Est. Priority Date: 02/18/1994
  • Status: Expired due to Fees
First Claim
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1. A compound of the structural formula:

  • ##STR36## wherein;

    X is CH2 ;

    R1 is H if R2 is not H or if R2 is H then R1 is ##STR37## R2 is --H if R1 is not H or if R1 is H then R2 is ##STR38## and R3 is ##STR39## or a pharmaceutically acceptable salt, hydrate or crystal form thereof.

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