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CAS 674792-08-6
tert-butyl 4,7-diazaspiro[2.5]octane-4-carboxylate
Codes: RISD-023
Application context (from source-drug indications)
Spinal muscular atrophyRisdiplam
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Risdiplam | Tier B — Position early | - |
Position in synthesis routes (up/downstream chain)
Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.
1-aminocyclopropanecarboxylic acid→ethyl 1-aminocyclopropanecarboxylate hydrochloride→2-chloroacetyl chloride→ethyl 1-(2-chloroacetamido)cyclopropanecarboxylate→7-benzyl-4,7-diazaspiro[2.5]octane-5,8-dione→7-benzyl-4,7-diazaspiro[2.5]octane→tert-butyl 7-benzyl-4,7-diazaspiro[2.5]octane-4-carboxylate→oxalic acid→tert-butyl 4,7-diazaspiro[2.5]octane-4-carboxylate hemioxalate→tert-butyl 4,7-diazaspiro[2.5]octane-4-carboxylate→5-bromo-2-chloropyridine→tert-butyl 7-(6-chloropyridin-3-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate→tert-butyl 7-(6-aminopyridin-3-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate→di-tert-butyl malonate→tert-butyl 7-(2-hydroxy-4-oxo-4H-pyrido[1,2-a]pyrimidin-7-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate→tert-butyl 7-(4-oxo-2-(tosyloxy)-4H-pyrido[1,2-a]pyrimidin-7-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate→2,8-dimethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine→tert-butyl 7-(2-(2,8-dimethylimidazo[1,2-b]pyridazin-6-yl)-4-oxo-4H-pyrido[1,2-a]pyrimidin-7-yl)-4,7-diazaspiro[2.5]octane-4-carboxylate→6-chloropyridazin-3-amine→4-bromo-6-chloropyridazin-3-amine→6-chloro-4-methylpyridazin-3-amine→isopropyl acetate→6-chloro-2,8-dimethylimidazo[1,2-b]pyridazine
Intermediates available on this site
Side-by-side comparison of all listed offers on this CAS; price bands are list-price ranges, final price subject to RFQ confirmation.
| Supplier | Product | Price band | MOQ | Lead time | Qualifications | Action |
|---|---|---|---|---|---|---|
| Unibest Nantong cGMP Site | 4-Boc-4,7-diazaspiro[2.5]octane Pharmaceutical Intermediates | On request | On request | On request | — |
This is a CAS-level registry record: registrations across routes are merged. Supplier offers and buyer demands will be matched on this CAS as the primary key.