Directed nucleophilic substitutions of cis-trioxatris-o-homobenzene (cis-"benzene trioxide")""' have given access to a series of potential precursors for the synthesis of aza-, thiaand phospha-analogous compounds ( I ) and the related bishetero-bishomobenzene systems (2)[lb1. New possibilities also open up for construction of carbocyclic[2] and mixed cis-tris-and cis-bis-o-homobenzene derivatives (3jL31 and (4)[41. Here we describe the preparation X,Y,Z = -O-,-NR-,-S-,-PR-,-CR~R~of cis-triazatris-o-homobenzene (cis-"benzene triimine"; 3,6,9-triazatetracyclo[6.1.0.0z~4. 05.7]nonane) (10) as the first example of such syntheses starting from cis-"benzene trioxide" (5)[51.Reaction of ( 5 ) with six equivalents of NaN3 in MgClz-buffered methanol (65 "C ; 48 h) affqrds crystalline 3,5,6-triazido-1,2,4-cyclohexanetriol (6) in 98 % yield ; tosylation thereof with 4.5 equivalents of p-toluenesulfonyl chloride (pyridine, 20"C, 14 days) gives the triester (7) in almost quantitative yield. The chiro-inositol configuration is prop-