Esterification and etherification of steroid and terpene under Mitsunobu conditions

The synthesis and study of steroids and terpenes continues to be a topic of widespread interest, the esterification and etherification under Mitsunobu conditions of primary alcohol such as geraniol prepared in 95% yield, and when a chiral secondary alcohol such as cholesterol or menthol is used, sufficient configurational inversion of alcohol with 65% yield, but the reaction of tertiary alcohols the α-terpeniol for example are rare.