Synthesis Route for 1105662-89-2

1105662-87-0
tert-butyl 3-(2-...
1105662-89-2
2-Methyl-2-propa...

Reference:

NOVARTIS AG Patent: WO2009/10488 A1, 2009 ; Location in patent: Page/Page column 47 ; WO 2009/010488 A1