Synthesis and X-ray diffraction analysis/crystal structure of new germatranes containing methyl substituents in three five-membered chelating rings
Keywords: Germatrane; 1-Isopropoxy-2,8,9-trioxa-5-aza-1-germatricyclo[3.3.3.01,5]undecane; 1-Isopropoxy-3,3-dimethyl-2,8,9-trioxa-5-aza-1-germatricyclo[3.3.3.01,5]undecane; 1-Isopropoxy-3,3,7,7-tetramethyl-2,8,9-trioxa-5-aza-1-germatricyclo[3.3.3.01,5]undecane; 1-I