摘要:
Novel stable, non-hygroscopic 2'-deoxy-2'-methylidenecytidine dihydrate and its methods for production, and compositions with improved solubility containing same and saccharide(s).
摘要:
Novel stable, non-hygroscopic 2'-deoxy-2'-methylidenecytidine dihydrate and its methods for production, and compositions with improved solubility containing same and saccharide(s).
摘要:
Novel 2'-methylidenenucleotide compounds of the formula (I) ##STR1## wherein R is a hydrogen or a halogen, R.sup.1 and R.sup.2 are the same or different and each is a fatty acid residue or a hydrocarbon residue, and R.sup.3 and R.sup.4 are the same or different and each is a hydrogen, a halogen or an alkyl; salts thereof; methods for production thereof; and pharmaceutical use thereof. The compounds and salts thereof show an excellent antitumor effect in mammals. More specifically, they show a remarkable activity of inhibiting growth of mouse tumors, cultured human tumor cells, and human tumors transplanted to nude mice, and are useful for the treatment and prevention of recurrence of lung cancer, gastrointestinal cancer, breast cancer, cervical cancer, gynecological cancer, urinological cancer, leukemia, melanoma, lymphogenous metastatic tumor and the like in mammals. They are also useful as antitumor agents since they have an increased bioavailability and low toxicity. In addition, they have the effects of maintaining and enhancing their activities.
摘要:
The present invention relates to a novel compound represented by the following formula [I] which is useful as a synthetic intermediate of a 2-alkynyladenosine.The present invention also relates to a process for producing the compound and a process for producing a 2-alkynyladenosine [IV] by way of the compound.Further, the present invention relates to a 2-alkynyladenosine derivative represented by the following formula [V] having excellent storage stability and, to a method of storing the 2-alkynyladenosine in the form of that derivative. ##STR1## [I] A=a leaving group, [II] A=NH.sub.2,[V] A=NHR.sup.4,wherein R.sup.1 through R.sup.4 represent a hydrogen atom or a protective group, and n denotes an integer of 1 to 15, provided that R.sup.1 through R.sup.4 do not represent a hydrogen atom simultaneously.
摘要翻译:本发明涉及可用作2-炔基腺苷合成中间体的下式[I]表示的新型化合物。 本发明还涉及该化合物的制备方法和通过该化合物制备2-炔基腺苷[Ⅳ]的方法。 此外,本发明涉及具有优异的储存稳定性的由下式[V]表示的2-炔基腺苷衍生物,以及以该衍生物的形式存储2-炔基腺苷的方法。 [I] A =离去基团,[II] A = NH 2,[V] A = NHR 4,其中R 1至R 4表示氢原子或保护基,n表示1至15的整数, R1至R4同时不表示氢原子。
摘要:
Pyrimidine 2'-deoxy-2'-methylidene nucleoside compounds: ##STR1## wherein R.sup.1 represents amino, hydroxy, silylamino, silyloxy, acylamino or acyloxy; R.sup.2 represents hydrogen, halogen, a lower alkyl, a lower alkenyl, a lower alkynyl or haloalkyl; R.sup.3 and R.sup.4 represent the same or different hydrogen, silyl, acyl or aminoacyl, or a pharmaceutically acceptable salt or hydrate thereof, except that R.sup.1 is amino or hydroxy, and both of R.sup.3 and R.sup.4 are hydrogen.Said compounds possess excellent antitumor and antiviral activities, thus providing novel anticancer and antiviral agent.
摘要:
It is done to read information containing an address of a memory at which a cache miss is generated, from a cache memory. The numbers of cache misses generated at each cache miss generated address contained in the information are totalized. The cache miss generated addresses whose generated cache miss numbers are totalized are sectionalized by each of the sets. Further, the address group whose numbers of cache miss generated are consistent or close is extracted from a plurality of cache miss generated addresses divided as addresses in the same set.
摘要:
Disclosed herein are a novel 2-substituted adenosine derivative having the following formula [I] ##STR1## wherein R represents a hydrogen atom or a hydroxyl group, m is an integer of 2 to 7, n is 0 or an integer of 1 to 3, and R.sup.1, R.sup.2 and R.sup.3, which may be the same or different, each independently represent a hydrogen atom, a hydroxy protective group or a phosphoric acid residue, and salts thereof.The above compounds are excellent in a circulation ameliorating effect such as a vasodepressor activity, and have high selectivity for A.sub.2 receptors, but cause less undesirable side effects such as a suppresssive effect on the heart. They are therefore effective when used in pharmaceutical compositions for circulatory diseases.
摘要:
It is done to read information containing an address of a memory at which a cache miss is generated, from a cache memory. The numbers of cache misses generated at each cache miss generated address contained in the information are totalized. The cache miss generated addresses whose generated cache miss numbers are totalized are sectionalized by each of the sets. Further, the address group whose numbers of cache miss generated are consistent or close is extracted from a plurality of cache miss generated addresses divided as addresses in the same set.
摘要:
The present invention is directed to crystals of P1-(2′-deoxycytidine 5′-)P4-(uridine 5′-)tetraphosphate (dCP4U) or a salt thereof and to a process for producing the crystals. The present invention also provides a process for producing dCP4U involving reacting uridine 5′-monophosphate (UMP), 2′-deoxycytidine 5′-monophosphate (dCMP), diphenyl phosphorochloridate (DPC), and pyrophosphate (PPi). The crystals of dCP4U obtained through the process according to the present invention have high purity and high stability and no hygroscopicity as compared with a freeze-dried product, and thereby serve as a useful raw material for preparing a pharmaceutical. The process for producing dCP4U according to the present invention permits use of inexpensive UMP as a raw material and realizes high yield. Thus, the process is suitable for large-scale synthesis of dCP4U.
摘要:
The digital broadcast receiving apparatus according to the present invention includes: a first decoding unit which decodes video data of a first digital broadcast and outputs first video data that is decoded; a second decoding unit which decodes video data of a second digital broadcast and outputs second video data that is decoded; and a selection unit which selects one of the first video data and the second video data, and the first decoding unit outputs the first video data synchronous with a referential clock when the first video data is selected by the selection unit, and the first decoding unit outputs the first video data with timing delayed or accelerated by as much as an offset value with respect to timing of predetermined periodicity when the first video data is not selected by the selection unit.