78596-73-3Relevant articles and documents
Organosilyl-Benzo-triazole derivatives, processes for their production and their use as UV protecting agents
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Page/Page column 13-14, (2010/11/30)
The present invention refers to new benzotriazole derivatives, which for their physicochemical properties can be used as UV protection agents. In addition, they can be used to manufacture cosmetic, dermatological, veterinarian as well as pharmaceutical formulations, which protect the skin, lips, nails and hair against UV radiation.
A New Synthesis of Aflatoxin M1
Buechi, George,Francisco, Manuel A.,Liesch, Jerrold M.,Schuda, Paul F.
, p. 3497 - 3501 (2007/10/02)
Starting with the known and readily available phloroglucinol monobenzenesulfonate (4) and 1,4-anhydroerythritol (7), we prepared aflatoxin M1 (1) in 13 steps with an overall yield of 5percent.The critical features of this second synthesis of aflatoxin M1 (1) include a novel approach to the tricyclic phenol 21 containing the ABC ring system, a regioselective hydrogenolysis of the benzyl protecting group at C6 in 16, and removal of the second benzyl group in 20 by Birch reduction.Neither the 1,3,5-trialkoxy-substituted benzene ring nor the vinyl ether function present in 20 were affected in the latter operation.