Abstract:
A process of reacting (A) a compound capable of forming a stable radical which is selected from among (A1) oxygen compounds having carbon-hydrogen bonds at the position adjacent to the oxygen atom, (A2) carbonyl compounds and (A3) compounds having hydrocarbon groups bearing methyne carbon with (B) a radical-scavenging compound selected from among (B1) unsaturated compounds, (B2) compounds having hydrocarbon groups bearing methyne carbon, and so on in the presence of molecular oxygen by the use of an imide catalyst represented by general formula (1) or the like to thereby obtain an adduct of the compound (B) with the compound (A), a product of substitution of the compound (B) with the compound (A), or oxides of both. In said formula, R and R are each hydrogen or the like, or alternatively R and R may be united to form a double bond or an aromatic or nonaromatic ring; and X is oxygen or hydroxyl. This process makes it possible to efficiently produce various organic compounds under mild conditions through addition or substitution by the use of molecular oxygen.
Abstract:
Acylating agents comprising: (A) a 1,2-dicarbonyl compound or its hydroxy-reduction derivative; (B) an enzyme; and (C) at least one compound selected from among (c1) metal compounds and (c2) imide compounds such as N-hydroxyphthalimide. As the 1,2-dicarbonyl compound or its hydroxy-reduction derivative (A), use may be made of biacetyl, 2,3-butanediol, etc. As the metal compounds (c1), use may be made of a cobalt compound such as cobalt acetate. An acyl group can be efficiently introduced into a methine carbon atom by treating a compound carrying a methine carbon atom such as an adamantane derivative by the above acylating agent.
Abstract:
The present invention relates to new dicyclooctane derivates represented by general formula (I), preparation processes and pharmaceutical compositions containing them, and to the uses for treatment especially for dipeptidyl peptidase inhibitor(DPPIV), in which each substituent group of general formula (I) is as defined in specification.
Abstract:
Hydroxymethyl-containing alicyclic compounds represented by formula (1) or (2), wherein rings A, B, C, D, and E each represents a nonaromatic carbon ring; R and R each represents hydrogen or a hydrocarbon group and at least one of R and R is a hydrocarbon group; and R , R , and R each represents hydrogen, halogeno, alkyl, hydroxyl optionally protected by a protective group, hydroxymethyl optionally protected by a protective group, amino optionally protected by a protective group, carboxyl optionally protected by a protective group, nitro, acyl, or a group represented by formula (3) (wherein R and R have the same meanings as the above).