Abstract: A rotor extends towards the central axis of an electric motor rotation and is rotatably supported about the central axis of rotation. The rotor includes: permanent magnets arranged in its outer peripheral portion wherein N-poles and S-poles are alternately formed in the circumferential toward the rotor in the outer peripheral portion of the rotor, the N-poles and the S-poles being magnetic poles extending parallel toward the central axis of rotation; an outer peripheral core located facing the permanent magnet outer peripheral surfaces intermediate portions, the same portions excluding both end portions toward the central axis of rotation; and two terminal cores located at each end of the rotor toward the central axis of rotation. The outer peripheral core and the terminal cores are made of a magnetic material, and the maximum magnetic permeability of the terminal cores is equal to or less than that of the outer peripheral core.

Abstract: There are provided a novel process for producing [{(5Z,7E)-(1S,3R,20S)-1,3-dihydroxy-9,10-secopregna-5,7,10(19),16-tetraen-20-yl}oxy]-N-(2,2,3,3,3-pentafluoropropyl)acetamide, which process is characterized by irradiating a compound represented by the formula: with UV to ring-open the compound, and then isomerizing the resulting compound; an intermediate useful for carrying out the process; and a process for producing the intermediate.

Abstract: There are provided a novel process for producing [{(5Z,7E)-(1S,3R,20S)-1,3-dihydroxy-9,10-secopregna-5,7,10(19),16-tetraen-20-yl}oxy]-N-(2,2,3,3,3-pentafluoropropyl)acetamide, which process is characterized by irradiating a compound represented by the formula: with UV to ring-open the compound, and then isomerizing the resulting compound; an intermediate useful for carrying out the process; and a process for producing the intermediate.