Mitsui Toatsu Chemicals, Incorporated

Daiwa Kasei Industry Co., Ltd.

Yutaka Watanabe

Shoichiro Ozaki

Akira Awaya

Yusaku Ishizuka

Yoshinori Nakahara

Masato Hirata

Hironori Matsubara

Junji Kawachi

A process for producing 4,6-diaminoresorcinols comprises the steps of:

Process for producing 4,6-diaminoresorcinols

Disclosed herein are phosphoric acid esters of myoinositol, which are represented by the following general formula (I): ##STR1## and their salts, as well as a preparation process thereof. The myoinositol derivatives can each be obtained by causing a phosphorylating agent to act on a myoinositol derivative substituted with catalytic reduction removable substituent groups at the positions other than those desired to be substituted by phosphoric acid residual groups and then catalytically reducing the thus-phosphorylated myoinositol.

Myoinositol derivatives and preparation process thereof

Myoinsitol derivatives, process for preparing same, phosphorylating

Inositol derivative and method for preparing same

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Matsuyama, Japan

Yutaka Watanabe