1. Use of at least one compound of formula Ic wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently of one another represent a radical selected iz H, OH, OCOCH, CHOH, SOH, halogen, or-chain or branched alkyl or alkoxy group having 1 to 20 carbon atoms, as an antimicrobial active soedineniya.2. Use according to claim. 1 in cosmetic / pharmaceutical formulations, medicaments, food products, household chemical products, plastic products, paper and / or kraskah.3. Use according to Claim. 1 or 2 for improving sohraneniya.4. Use according to claim. 2 in products for the care of teeth and mouth polostyu.5. Use of at least one compound of formula Ic wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently of one another represent a radical selected iz H, OH, OCOCH, CH-OH, SOH, halogen, or-chain or branched alkyl or alkoxy group having 1 to 20 carbon atoms, as anti-acne, antidandruff, antiperspirant or deodorant active soedineniya.6. Use according to one or more claims. 1, 2, 4 or 5, characterized in that at least one of the radicals R1 to R10 is OH or a straight or branched alkoxy group having from 1 to 20 atoms ugleroda.7. Use according to one or more claims. 1, 2, 4 or 5, characterized in that a compound of formula I is a compound of formula wherein R2 Iav is H or SOH, R3 is H, OH, linear or branched alkyl or alkoxy group having from 1 to 20 carbon atoms, R5 is H or OH, R7 is H or SOH, R8 is H, OH, halogen or a linear or branched alkoxy group having from 1 to 20 carbon atoms, iR10 is H, OH or straight or branched alkoxy group having from 1 to 20 carbon atoms .8.1. Применение по меньшей мере одного соединения формулы Iв которой R1, R2, R3, R4, R5, R6, R7, R8, R9 и R10 независимо друг от друга означают радикал, выбранный из- Н, ОН, ОСОСН3, СН2ОН, SO3H, галогена, или- неразветвленной или разветвленной алкильной или алкокси группы, имеющей 1 до 20 атомов углерода,в качестве антимикробного действующего соединения.2. Применение по п. 1 в косметических/фармаце
