摘要:
The present invention provides a novel process for preparation of darunavir that involves reduction of [(1S,2R)-3-[[(4-nitrophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]carbamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester, of formula (5). The present invention also provides darunavir ethanolate of particle size wherein d0.9 is less than 130 μm, d0.5 is less than 30 μm, d0.1 is less than 10 μm and process for its preparation.
摘要:
A system and method for distributing symmetric keys in a system including an end-user computer operated by an end-user, a service provider server of a service provider having a service provider identifier, and a manufacturer backend server operated by the manufacturer of the OTP token. The manufacturer backend server operates to verify one-time passwords generated by the OTP tokens and upon verifying the authenticity of the OTP token based on the generated passwords, transmitting the symmetric key to a service provider server or an authentication server. Other systems and methods are disclosed.
摘要:
A system and method for distributing symmetric keys in a system including an end-user computer operated by an end-user, a service provider server of a service provider having a service provider identifier, and a manufacturer backend server operated by the manufacturer of the OTP token. The manufacturer backend server operates to verify one-time passwords generated by the OTP tokens and upon verifying the authenticity of the OTP token based on the generated passwords, transmitting the symmetric key to a service provider server or an authentication server. Other systems and methods are disclosed.
摘要:
The present invention provides a novel process for preparation of darunavir that involves reduction of [(1S,2R)-3-[[(4-nitrophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy -1-(phenylmethyl)propyl]carbamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester, of formula (5). The present invention also provides darunavir ethanolate of particle size wherein d0.9 is less than 130 μm, d0.5 is less than 30 μm, d0.1 is less than 10 μm and process for its preparation.