- Therapeutic and prophylactic agents for peptic ulcers
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A therapeutic and prophylactic agent for peptic ulcers comprising as an effective ingredient a cyclohexane derivative represented by general formula (I): STR1 wherein A represents a group shown by formula, >CH2, STR2 wherein X represents ethynylene, vinylene or ethylene, Y represents oxo or a hydroxy group; R1, R3, R4 and R5 each represents a hydrogen atom or alkyl; R2 represents a hydrogen atom, alkyl or a group shown by --OR8 ; R6 represents a hydrogen atom, oxo or a group shown by --OR8 ; and R7 represents a hydrogen atom or a group shown by --OR8, wherein R8 represents a hydrogen atom or an organic residue.
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- 148. The synthesis of damascenone and β-damascone and the possible mechanism of their formation from carotenoids
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A brief synthesis of damascenone (5) from the acetylenic diol 2 and also that of β-damascone (8) from β-ionol, resembling the biogenetic synthesis, are described. A possible mechanism for the formation of damascenone from neoxanthin is proposed.
- Isoe, Sachihiko,Katsumura, Shigeo,Sakan, Takeo
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p. 1514 - 1516
(2007/10/11)
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