| 摘要 |
PCT No. PCT/EP98/01168 Sec. 371 Date Aug. 30, 1999 Sec. 102(e) Date Aug. 30, 1999 PCT Filed Mar. 3, 1998 PCT Pub. No. WO98/40382 PCT Pub. Date Sep. 17, 1998Compounds of formula (I) in which R4 is a phenyl radical substituted by R5, where R5 is a tetrazole-5-yl-radical optionally substituted by a radical R6, are novel efficacious PDE3/4 inhibitiors.
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