摘要:
A process for protecting nonstable or moderately stable, cohesionless to slightly cohesive geologic formations, in particular, in tunnel construction, in which drill holes are first made by boring into the formation and, following completion of the boring, the drilling rod is removed. During this removal a hardenable injection material is forced into the drill hole, whereby, using a drilling rod, a pointed rod or anchoring element is placed in position in the boring. This element remains in the boring during removal of the drilling rod, and is solidly connected to the formation by the injection material.
摘要:
A tangled fibrous material from cut glass fibre bundles, with the cut glass fiber bundler being fed into a compressed air flow and a glass fibre-laden air being deflected into a turbulent eddy flow of varying direction, so that a tangled fibrous material of wadding-like consistency is formed. Through the simultaneous addition of dry polymer-based binder powder, it is possible to obtain a tangled fibrous material as a starting product for a production of glass fibre-reinforced plastic moundings, which can be compressed to a felt. This can be packed as an intermediate or further processed in a heated belt press to glass fibre-reinforced plastic plates.
摘要:
The invention refers to antiviral and antitumor compositions which are useful for the control of viruses and tumors and which, in addition to a known antiviral or antitumor active xanthate, contain an adjuvant which increases its antiviral and antitumor action. The adjuvant is an ionic, preferably an anionic, compound with a lipophilic group and a hydrophilic group, preferably an alkali metal deoxycholate or a compound the lipophilic moiety of which is a straight or branched, saturated or unsaturated, aliphatic group with six to eighteen carbon atoms, and the hydrophilic group of which has one or two carboxyl, sulphate, sulphonate, or phosphate groups, or a pharmaceutically-acceptable salt thereof.
摘要:
In a method of producing a subterranean structure comprises the steps of excavating a ditch or hole in the ground to a desired subterranean level, placing the ceiling directly on the excavated ground at this level, filling the hole in the ground, and driving an arched tunnel into the ground below the ceiling, the ceiling is fixed in position and the ground is stabilized before the hole is filled and the arched tunnel is driven into the ground, by anchoring the ceiling with retaining elements projecting downwardly from the ceiling into the ground below, and arranging the retaining elements to form piles protecting the tunnel arch at respective sides thereof and preventing earth from crashing through the tunnel arch.
摘要:
A process for preparing lysergic acid esters of the formula ##STR1## wherein R is alkyl of up to 3 carbon atoms, comprises reacting corresponding lysergic acid or isolysergic acid amides with corresponding alcohols at temperatures of 0.degree. to 65.degree. C. for 2 to 30 hours in the presence of an acid at a pH value of 0-1.
摘要:
Compounds of the formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein R.sub.1 is alkyl of 2-6 carbon atoms, ##STR2## n is 1, or 2, m is 0 or 1,R.sub.2 is alkyl of 1-6 carbon atoms, ##STR3## is a CC single bond or a CC double bond, and the 8-positioned urea residue can be in the .alpha.- or .beta.-position, have valuable pharmacological properties, e.g., lactation inhibition and anti-Parkinsonism.
摘要:
Bicycloalkane derivatives of the formula ##STR1## wherein n is 1 or 2, R.sub.1 is lower alkyl, Acyl is alkanoyl, and Y is --S--R.sub.2, --SO.sub.m --R.sub.2, or ##STR2## wherein m is 1 or 2, R.sub.2 is alkyl, R.sub.3 is hydrogen or lower alkyl, R.sub.4 is acyl or phenyl optionally substituted with lower alkoxy, benzyloxy or alkanoyloxy; and Z is nitro, lower alkoxycarbonyl, lower alkanoyl, lower alkylsulfinyl, or lower alkylsulfonyl are useful intermediates in the total synthesis of steroids. The compounds are prepared by reacting a corresponding compound lacking the CH.sub.2 Y substituent with formaldehyde and a mercaptan or sulfinic acid, followed if desired by oxidation and optional salt condensation.
摘要:
Benzopyran derivatives of the formula ##STR1## wherein R.sub.1 and R.sub.3 each are lower alkyl; n is the integer 1 or 2; --A--B-- is >CH--CH.sub.2 - or >CH=CH-; X is a free, esterified or etherified hydroxy group; and Y is H or X and Y collectively are =O; and W is --(CH.sub.2).sub.3 --Z--R.sub.4 ##STR2## --(CH.sub.2).sub.3 --COOR.sub.6 or --(CH.sub.2).sub.3 CN, wherein V is halogen, Z is a ketalized carbonyl group or a free, esterified or etherified hydroxymethylene group; R.sub.4 and R.sub.5 each are lower alkyl and R.sub.6 is alkyl, aryl or aralkyl, are valuable intermediates in the synthesis of steroids.
摘要:
6,9-Oxido-9,10-seco-1,3,5(10),6,8,14-estrahexaenes, useful as intermediates in the total synthesis of steroids, of the formula ##SPC1##Wherein n is 1 or 2, R.sub.1 is lower-alkyl, R.sub.2, R.sub. 3 and R.sub.4 are H, alkoxy or acyloxy, X is a free or ketalized keto or free, esterified or etherified hydroxymethylene, are produced by the cyclization, with an acid catalyst, of a 9,10-secoestrane of the formula ##SPC2##Wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, X and n have the values given above, and Q is carbonyl or dialkoxymethylene. Hydrogenation produces the corresponding 6,9-oxido-9,10-seco-1,3,5(10)-estratrienes and 9-oxy-9,10-seco-1,3,5(10)-estratrienes.
摘要翻译:6,9-氧代-9,10-断-1,3,5(10),6,8,14-异己烯,其用作全合成类固醇的中间体,式为WHEREIN N IS 1 OR 2,R1 是低级烷基,R 2,R 3和R 4是H,烷氧基或酰氧基,X是游离或缩酮化酮或游离的酯化或醚化的羟基亚甲基,通过酸催化剂与9,10- 式WHEREIN R1,R2,R3,R4,X和n具有上面给出的值,Q是羰基或二烷氧基亚甲基。 氢化产生相应的6,9-氧化-9,10-断-1,3,5(10) - 三亚甲基和9-氧基-9,10-断-1,3,5(10) - 三亚甲基。
摘要:
This invention describes the new 11&bgr;-halogen-7&agr;-substituted estratrienes of general formula I in which R11 is a fluorine or chlorine atom, and the other substituents have the meanings that are explained in more detail in the description. The compounds have antiestrogenic properties or tissue-selective estrogenic properties and are suitable for the production of pharmaceutical agents.