摘要:
A novel pyrrolizidine derivative of the formula, ##STR1## which has potent antiarrhythmic activity and low toxicity is produced. The derivative can be synthesized: by acylating 2,6-xylidine to protect the amino group, nitrating the protected xylidine to introduce a nitro group at 3-position, reducing the nitro group to an amino group, followed by diazotizing and hydrolyzing, and then the resulted 3-hydroxy-2,6-dimethylaniline being condensed with 8-halocarbonylmethylpyrrolizidine; or by nitrating N-(2',6'-dimethyl)phenyl-8-pyrrolizidineacetamide to introduce a nitro group at 3'-position, reducing the nitro group to amino group, diazotizing the amino group and hydrolyzing the diazonium compound.
摘要:
An image forming apparatus includes a voltage generating section for generating one of an AC voltage and a voltage obtained by superposing an AC voltage on a DC voltage; an image carrier; and a contact charger for receiving the voltage generated by the voltage generating section and giving a surface potential corresponding to the received voltage to the image carrier by contact. Further, it includes a latent image forming section for forming a latent image by scanning the image carrier with a predetermined scanning period, and a control section for controlling the voltage generating section and the latent image forming section. The control section controls the voltage generating section and the latent image forming section so that a period of an AC component of the voltage generated by the voltage generating section is N times or 1/N times as long as the scanning period, where N is a natural number.
摘要:
A derivative of benzoquinonylphenyl alkanoic acid amide having the formula: ##STR1## wherein X represents an oxygen atom, sulfur atom, or methylated nitrogen atom, Me represents methyl, and n is 2 or 3. This derivative is effective as a cerebral insufficiency improver.
摘要:
A novel 1-substituted pyrrolizidine derivative having the formula: ##STR1## (wherein R.sup.1 is hydrogen or a lower alkyl group; R.sup.2 is hydrogen, a lower alkyl or lower alkoxy group, or a halogen; R.sup.3 is hydrogen, a lower alkyl, lower alkoxy or amino group, or a halogen),which can be produced by reacting 1-chlorocarbonyl (or alkoxycarbonyl)pyrrolizidine with a corresponding substituted aniline (or an alkali metal salt thereof). The pyrrolizidine derivative has antiarrhythmic activity.
摘要翻译:具有下式的新颖的1-取代的吡咯烷子衍生物:其中R 1是氢或低级烷基; R 2是氢,低级烷基或低级烷氧基或卤素; R 3是氢,低级烷基,低级 烷氧基或氨基,或卤素),其可以通过使1-氯羰基(或烷氧基羰基)吡咯烷酮与相应的取代的苯胺(或其碱金属盐)反应来制备。 吡咯烷啶衍生物具有抗心律不齐活性。
摘要:
A semiconductor integrated circuit includes an input terminal provided for each of input terminals. The input circuit outputs either one of "HIGH" or "LOW" as a frequency dividing ratio setting signal when the corresponding input terminal is "HIGH" or "LOW" in level but outputs another one of "HIGH" and "LOW" as a frequency dividing ratio setting signal when the corresponding input terminal is in an open state. Thus, the frequency dividing ratio of the programmable divider is determined, by fixing the level of only required ones of the input terminals into "HIGH" or "LOW" through, for example, wire bonding in the package while leaving all the others in open state.
摘要:
1. A compound having the formula (I): ##STR1## wherein A is --CH.sub.2 --, --O--, or --S--; R.sup.1 is CH.sub.3 or OCH.sub.3 ; R.sup.2 is hydroxy of carboxy which may be optionally esterized or amidated; R.sup.3 is H or a lower alkyl; and n is 0 or an integer of 1 to 6 or a pharmaceutically acceptable sale thereof.
摘要:
A fixing means for an electrophotographic copier includes a first roller and a second roller which are compressed against each other and serve to fix toner images on an image transferring medium passed therebetween. A control means is programmed to operate the rollers such that the heating of the second roller is continued for a predetermined length of time or until the surface temperature of the second roller reaches a certain predetermined temperature level after the surface temperature of the first roller reaches another predetermined temperature level such that the second roller is prevented from cooling down suddenly after the fixing operation is started. In another aspect of the present invention, the size of the image transferring medium passed between the rollers is detected and the heaters for the rollers are controlled accordingly such that temperature variations on the roller surfaces can be reduced and hence the roller lifetimes can be improved.
摘要:
A facsimile device includes an electrophotographic photosensitive body on which a toner image is formed and capable of being brought into contact with a sheet of paper for recording the toner image on the sheet of paper based on received data and a paper feeding device for conveying sheets of paper via a paper feeding system to a transfer position. An image transferring device is provided at the transfer position for transferring a toner image to the sheets of paper conveyed to the transfer position by the paper feeding system at a nip portion formed between the electrophotographic photosensitive body and the sheet of paper. A registration roller controls a timing at which the sheet of paper is conveyed to the transfer position. A pre-registration sensor detects the sheet of paper, conveyed by the paper feeding device, at an upstream side of the registration roller. A controller controls at least one of a voltage level and a transfer current level of the image transferring device based on an output by the pre-registration sensor.
摘要:
A compound having the formula (I): ##STR1## wherein A is --CH.sub.2 --, --O--, or --S--; R.sup.1 is CH.sub.3 or OCH.sub.3 ; R.sup.2 is hydroxy or carboxy which may be optionally esterized or amidated; R.sup.3 is H or a lower alkyl; and n is 0 or an integer of 1 to 6 or a pharmaceutically acceptable salt thereof.
摘要:
A hydroquinonylphenyl butyric acid amide derivative having the formula (I): ##STR1## wherein R.sup.1 represents an aromatic or heterocyclic group which may be substituted, R.sup.2 represents a hydrogen atom, a lower alkylcarbonyl group, an aromatic carbonyl or heterocyclic carbonyl group which may be substituted, and X represents an oxygen atom or sulfur atom or a pharmaceutically acceptable salt thereof, which has a cerebral insufficiency improving activity.