| abstract |
Organosilicon compounds have the formula …<CHEM>… wherein A is methylene, carbonyl or sulfonyl, R, R1 and R2 are each alkyl groups, respectively; R3 is alkyl, naphthyl, pyridyl or thienyl, each of which can be substituted or A is alkenyl or cycloalkyl;… R4 is usually hydrogen, or is alkyl or alkenyl; and… R5 to R12 are each hydrogen, alkyl or substituted alkyl. …<??>Non-toxic organic salts can be formed. …<??>Several preparations are described, especially from an amine wherein NAR3-R4 is NH2. …<??>Pharmaceutical compositions for treatment of tumor contains the compound or salt. |