Tulobuterol

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File:Hokunalin tape.png
"Hokunarin Tape" used to treat asthma and bronchitis

Tulobuterol (INN) is a long-acting beta2-adrenergic receptor agonist, marketed in Japan as a transdermal patch under the name Hokunalin tape (ホクナリンテープ).[1]

Currently, it is only legal in 7 countries: Japan, Germany, China, South Korea, Bangladesh, Pakistan, and Venezuela. It is available in India also.

Synthesis

File:Tulobuterol synthesis.svg

The oxidation of 2'-chloroacetophenone (1) with selenium dioxide gives o-chlorophenylglyoxal (2). Condensation with tert-butylamine gives the imine (3). Reduction with sodium borohydride completes the synthesis of tulobuterol.[2]

References

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