摘要:
The disclosure describes morphinan compounds and methods for their synthesis. Preferred methods according to the disclosure allow for large-scale preparation of diastereomerically enriched morphinans. Preferred methods according to the disclosure may also allow for the preparation of diastereomerically enriched morphinans using less time, and/or using fewer reaction steps, and/or providing better yield than previously used methods for preparing morphinans. The methods disclosed herein find utility in synthetic organic chemistry as well as medicinal chemistry.
摘要:
A zoom lens is described which is quite simple and yet provides a wide (5:1) zoom range. The lens consists of a front focusing negative lens which provides a stationary virtual image for two rear zooming lens groups. These two zooming groups are positive and reimage the object at a camera pickup device. Such zooming groups are of substantially equal focal length and bear equally in the magnification change. The invention includes a magnifier which utilizes the zoom lens and has the mechanical aspects necessary to provide the needed lens motions.
摘要:
Compounds of formula I ##STR1## wherein X is ##STR2## or .dbd.N--O--, in which R.sub.4 is hydrogen or halogen, R.sub.1, R.sub.2, and R.sub.3 independently represent hydrogen or a C.sub.1-4 alkyl group, and n has a value of zero to four are disclosed. Also disclosed are pharmaceutically acceptable salts of these compounds, pharmaceutical compositions of these compounds or salts with a pharmaceutically acceptable carrier, the use of these materials as N-methyl-D-aspartate receptor antagonists, processes for preparing these compounds and salts, and methods to treat cerebral diseases by administering an effective amount of these compounds, salts or compositions.
摘要:
A scanning device for causing a beam of light to be repetitively swept across a surface includes a laser source for providing a beam of laser light and a pentaprism assembly which redirects the beam of light to the surface. The pentaprism assembly includes a support member and a plurality of pentaprism elements positioned around the periphery of the support member. An arrangement is provided for rotating the support member such that successive ones of the plurality of pentaprism elements are brought into the path of the beam of light and redirect the beam of light to the surface. Movement of each pentaprism element while intersecting the beam of light causes the beam of light to sweep across the surface. The scanning device may also be used without a laser source to scan ambient light which is reflected from a surface and direct the light to a detector.
摘要:
A digital plate maker system to receive graphics and text data and selectively discharge incremental areas of a charged electrophotographic member to form thereon the latent images represented by the graphics and text data, the imaged member thereafter being toned and output from the system. Thereafter, the toned image may be fused on the member and the member being used in an offset lithographic printing press. The digital platemaker system includes an optical system which may form a maximum of 22 individual rays which are direct deflected twice through a field flattening lens and then onto the charged member. The optical system further includes an optical scale or grating which provides electrical signals indicating the precise location of the individual rays along scan lines on the member. The digital plate maker system further includes an electronic system which generates electrical signals to form the 22 individual rays. The text data is used to modulate signals produced by the graphics data, the result of the modulation being the beam control signals used to form the 22 individual rays. The digital plate maker system further includes a toning system which provides a vertical meniscus which is essentially stationary with the electrophotographic member as the electrophotographic member is rotated past the toning station.
摘要:
Novel N-sec-alkyl derivatives of norcodeine and normorphine wherein the sec-alkyl group contains either four or five carbon atoms. Specifically included are those derivatives of norcodeine and normorphine wherein the sec-alkyl group is 2-butyl, 3-pentyl, .alpha.-methylallyl and .alpha.-methylcyclopropylmethyl. The normorphine derivatives having strong agonist potency combined with strong antagonist qualities and indicated low addiction potential. The norcodeine analogs are useful as intermediates in preparing the corresponding normorphine compounds.
摘要:
A wide angle lens of the retrofocus type comprising six lens groups in front and rear groupings. The rear grouping is movable forward while the front grouping is stationary to focus the lens to within ten equivalent focal lengths of the lens.
摘要:
Analgesic compositions containing stereoisomerically pure normorphine and norcodeine derivatives or pharmaceutically acceptable acid addition salts thereof are described. Methods of administering the novel compositions to achieve analgesia are described as well.
摘要:
Compounds of the formula I ##STR1## are disclosed. In this formula, R is a member selected from the group consisting of --CR.sub.1 R.sub.2 R.sub.3, hydroxy, an alkoxy group having 1 to 4 carbon atoms and --NR.sub.4 R.sub.5, in which at most one of R.sub.1, R.sub.2 and R.sub.3 is hydrogen and the remainder are each independently selected from the group consisting of an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, a cycloalkylalkyl having 4 to 9 carbon atoms and a 3 to 6 membered cyclic ether; R.sub.4 and R.sub.5 are each independently hydrogen or an alkyl group having 1 to 4 carbon atoms; R.sub.6 and R.sub.7 are each independently hydrogen or an alkyl group having 1 to 4 carbon atoms; and R.sub.8 is hydrogen, an alkyl group having 1 to 4 carbon atoms, hydroxy, an alkoxy group having 1 to 4 carbon atoms or halogen. Salts of these compounds are also disclosed. Also disclosed are pharmaceutical compositions of these compounds with a pharmaceutically acceptable carrier, the use of these materials as N-methyl-D-aspartate receptor antagonists, processes for preparing these compounds and salts, and methods to treat cerebral diseases by administering an effective amount of these compounds, salts or compositions.
摘要翻译:公开了式I的化合物。 在该式中,R是选自-CR 1 R 2 R 3,羟基,具有1至4个碳原子的烷氧基和-NR 4 R 5的成员,其中R 1,R 2和R 3中至多一个是氢,其余各自是 独立地选自碳原子数1〜4的烷基,碳原子数2〜4的烯基,碳原子数2〜4的炔基,碳原子数3〜7的环烷基,环烷基烷基, 4至9个碳原子和3至6元环醚; R4和R5各自独立地为氢或具有1至4个碳原子的烷基; R6和R7各自独立地为氢或具有1至4个碳原子的烷基; R8为氢,碳原子数为1〜4的烷基,羟基,碳原子数1〜4的烷氧基或卤素。 还公开了这些化合物的盐。 还公开了具有药学上可接受的载体的这些化合物的药物组合物,这些材料用作N-甲基-D-天冬氨酸受体拮抗剂,制备这些化合物和盐的方法,以及通过施用有效量的 这些化合物,盐或组合物。
摘要:
A camera system for the simultaneous and substantially exact capturing of images of a subject on separate image reproduction mediums wherein an optical member is interposed between a lens group and a pair of separate, discrete image receiving mediums. One of the mediums is a photographic film and the other is a viewing screen for personal viewing or, alternatively, an electronic system for electronic signal generation, electronic viewing and electronic capture of the image. The optical member allows light rays emanating from the object to pass therethrough to impinge upon one of the mediums while simultaneously reflecting light rays to the second medium. This system allows for the simultaneous transfer and reproduction of the object image onto more than one medium without degradation of the image or depth of field. The system accomplishes the multiple image transfer through a stationary device, thereby eliminating the necessity of moving parts. The system also eliminates problems resulting from refractions of light normally accompanying light ray direction control devices.