1. Pyridane compounds as Btk inhibitors and the components that can be accepted in medicine； 1. Claim 1: a formula compound (1),a. Ring a is arilo, or 5 to 6 members of pagan； R1 is h, halo, (C (r830909) (r8344nr2)；N (R) C (O) R N (R) C (O) NRN (R⁴) CO₂R, N (R⁴) S (O) ₂R, N (R⁴) S (O) R, N (R⁴) (R⁴),optionally substituted 3 to 7 membered heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen or sulfur, or optionally substituted 5 to 6 membered monocyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen or sulfur； or R¹ is absent； R² is H, (C (R⁵) (R⁵)) ₘOR⁴,(C (R⁵) (R⁵)) ₘN (R⁴) COR, (C (R⁵) (R⁵)) ₘN (R⁴) C (O) C (O) NR₂,(C (R) (R)) N (R) (R)optionally substituted 3 to 7 membered heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen or sulfur, or optionally substituted 5 to 6 membered monocyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen or sulfur； or R² is absent； or R¹ and R² together with the atoms to which they are connected, form a condensed ring of 3 to 7 members which is optionally substituted； where R¹ and R² are none H； and where R¹ and R² are none absent； each R³ is independently halogen, aliphatic C₁₋₆,aryl C₅₋₁₀,A saturated or partially unsaturated carbon thyroid ring, consisting of 3 to 8 members, 3 to 7 members, and 1 to 4 heteroatoms independently selected from nitrogen, oxygen or sulfur, O a five to six member heterocyclic ring, consisting of 1-4 heteroatoms independently selected from nitrogen, oxygen or sulfur, each R-R, so, SOR, C (o), co8322； R-C (o) n (R) 8322；Each r83099 is independent of - R, halogen, or, sir, CN,-SO R -SOR -C (O) R -CO R -C (O) N (R)-NRC (O) R -NRC (O) N (R)-So8322； R-N (R) 832222；each R is independently hydrogen, aliphatic C₁₋₆,aryl C₅₋₁₀,a saturated 3-8-membered saturated or partially unsaturated carbocyclic ring, a 3- to 7-membered heterocyclic ring having 1-4 heteroatoms independently
