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US 4,199,531 AGranted
Intermediates for the production of quinones
AssigneeTakeda Chemical Industries, Ltd.
InventorsShinji Terao, Kaneyoshi Kato
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Abstract
A novel method for producing hydroquinone and quinone derivatives by a regio- and stereo-specific coupling reaction of hydroquinone derivative having a terminal activated (poly)prenyl side chain with a prenyl derivative. This method can provide in good yield various hydroquinone and quinone derivatives having any prenyl length of the side chain.
Claims14
A compound of the formula:
- ##STR33## wherein R.sup.1 is methoxy, Z is a protective group capable of protecting a hydroxyl group, A is halogen, arylthio, arylsulfinyl or arylsulfonyl, wherein aryl is phenyl or p-methylphenyl and n is an integer of from 1 to 9, inclusive.
Dependencies are inferred from the claim text.