摘要:
The method includes the steps of receiving at the PEAD first digital data representing the transaction request. The PEAD provides information to the user regarding an ability to approve the transaction request. When the transaction request is approved by the user, the PEAD receives second digital data representing the electronic service authorization token. A remote agent server may provide a bridge between the electronic transaction system and the PEAD. In another embodiment, the private key is stored on the portable device, encrypted. The decryption key is stored outside of the device, at a trusted 3rd party location. When the user attempts to make a signature the software sends a request for the decryption key, along with the user's password or pass phrase keyed in at the keyboard of the PDA, smart phone, or cell phone, to a server belonging to the trusted 3rd party.
摘要:
THIS INVENTION IS DIRECTED TO PROCESSESS FOR THE PREPARATION OF DESA-ANDROSTANES, PREGNANES AND UNSATURATED DERIVATIVES THEREOF BY PYROLYZING THE ALKALI METAL SALT OF THE CORRESPONDING 3,5-SECO-3-OIC ACID. THE INTERMEDIATES PREPARED IN ACCORDANCE WITH THE PROCESS OF THIS INVENTION ENABLE THE PREPARATION OF 9B,10A-STEROIDS WHICH ARE PHARMACOLOGICALLY USEFUL AS ANABOLIC, ANTI-ANDROGENIC, PROGESTATIONAL AND SALT-RETAINING AGENTS.
摘要:
A method for the reductive ozonolysis of olefins to produce carbonyls by reacting the olefin with ozone in the presence of a molar excess of a Baeyer-Villiger solvent is disclosed. The method eliminates ozonide formation. A dioxetane is formed as an intermediate and can be isolated.
WHEREIN R1 IS HYDROXY, LOWER ALKANOYLOXY, CARBOXYLOWERALKANOYLOXY, BENZOYLOXY, TETRAHYDROPYRANYLOXY, BENZYLOXY, BENZHYDRYLOXY, TRITYLOXY, ALLYLOXY, OR LOWER ALKOXYLOWER ALKOXY; R2 IS HYDROGEN OR LOWER ALKYL; R1 AND R2 TAKEN TOGETHER ARE SELECTED FROM THE GROUP CONSISTING OF (17B-OH, 17A-LOWER ALKANOIC ACID LACTONE), LOWER ALKYLENEDIOXY AND OXO; R3 IS HYDROGEN, LOWER ALKYL, HYDROXY, LOWER ALKANOYLOXY, CARBOXYLOWERALKANOYLOXY, BENZOYLOXY, TETRAHYDROPYRANYLOXY, BENZYLOXY, BENZHYDRLOXY, TRITYLOXY, ALLYLOXY, OR LOWER ALKOXY-LOWER ALKOXY; AND X IS A SUBSTITUENT IN THE 6- OR 7-POSITION SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL, LOWER ALKYLTHIO, LOWER ALKANOYLTHIO AND HALOGEN; COMPRISING ESTERIFYING AN 11-HYDROXY-ANDROST-4-EN-3-ONE HAVING THE FORMULA:
WHERE R1,R2,R3 AND X ARE AS ABOVE; TO FORM A LEAVING GROUP IN THE 11-POSITION SELECTED FROM THE GROUP CONSISTING OF TOLUENE SULFONATE, LOWER ALKYL SULFONATE AND NITROPHENYL SULFONATE; SUBJECTING THE RESULTING ANDROST-4-EN-3-ONE WITH THE LEAVING GROUP IN THE 11-POSITION TO OXIDATIVE RING OPENING TO FORM THE CORRESPONDING 5 - OXO - 11 - (LEAVING GROUP)-3,5-SECOA-NORANDROSTAN-3OIC ACID, FORMING AN ALKAI METAL SALT OF SAID ACID; AND PYROLYZING SAID ALKALI METAL SALT BY HEATING SAID ALKALI METAL SALT TO A TEMPERATURE OF ABOUT 200*C. TO ABOUT 350* C. TO FORM SAID DESA-ANDROST-9-EN-5-ONE.
摘要:
THE SPECIFICATION DISCLOSES HIGHLY FLUORINATED COMPOUNDS EACH CONTAINING A 3 TO 16 MEMBERED RING WHICH INCLUDES A CARBON-BONDED PEROXIDE GROUP. THESE COMPOUNDS ARE PREPARED BY FLUORINATING A COMPOUND HAVING 2 OXYGEN ATOMS BONDED TO CARBON TO EFFECT RING CLOSURE TO FORM THE PEROXIDE-CONTAINING RING. THE COMPOUNDS OF THE INVENTION ARE USEFUL AS OXIDANTS AND AS POLYMERIZATION INITIATORS.
摘要:
This invention is directed to processes for the preparation of desA-androst-9-ene-5-ones and desA-pregn-9-ene-5-ones which comprises the process of subjecting the corresponding 11-hydroxy steroid sequentially to oxidation, pyrolyzation and esterification.
摘要:
Chalcogenated polyacenes including organic semiconductors such as tetrathiotetracene, tetraselenotetracene, and hexathiopentacene are produced by reaction of a polyacene with elemental sulfur, selenium, and tellurium in the presence of nitrogen-containing hot solvents, preferably alkylated amides. N, N-dimethylformamide is the preferred solvent. The disclosed method of synthesis produces substituted polyacenes of high yield and purity in considerably shorter reaction times than achievable by prior art methods.
摘要:
This invention is directed to processes for the preparation of desA-androst-9-en-5-ones and desA-pregn-9-en-5-ones which comprises subjecting the corresponding androst-4-en-one or pregn4-en-3-one respectively to the sequential steps of ozonolysis pyrolyzation, halogenation and dehydrohalogenation. The intermediate products produced in accordance with the processes of this invention can be converted into steroid end products of the 9 Beta , 10 Alpha -series which are pharmacologically useful as anabolic and progestational agents.