Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Adamantanemethanol derivatives and production processes thereof
An adamantanemethanol derivative of the invention is represented by the following formula (1), wherein Ra is a hydrogen atom or a hydrocarbon group; Rb is a hydrocarbon group having a carbon atom, to which carbon atom at least one hydrogen atom is bonded, at a bonding site with the adjacent carbon atom; Rc, Rd and Re are each a hydrogen atom, a hydroxyl group which may be protected by a protective group or the like; provided that a hydroxyl group protected by a protective group or the like is bonded to at least one carbon atom constituting the adamantane skeleton when Ra is a hydrogen atom or a methyl group and Rb is a methyl group; and at least one substituent, in addition to the HO&#8212;C(Ra)(Rb)&#8212; group indicated in the formula (1), is bonded to the adamantane ring when one of Ra and Rb is a methyl group and the other is an ethyl group. 
Daicel Chemical Industries, Ltd.
C C C Y C
C07C C07C C07C Y02P C07C
inventional additional inventional additional inventional
Tatsuya Hiroshi
Nakano Shimojitosyo