Mect Corporation

Shuji Fujita

Tomoya Ogawa

Mamoru Sugimoto

Masaaki Numata

Akira Endo

Takayuki Ishii

Masayoshi Ito

Yoshiyasu Shitori

Shoji Yoshimura

Makoto Tanaka

Kenkichi Tomita

Ryoichi Osawa

Shigeki Nunomura

Masanori Kobayashiu

Masami Iida

Masamichi Fujita

Lewis-associated compound, process for producing the same, and

GM.sub.3 analogous compound (I) below: ##STR1## wherein one of R.sup.2 and R.sup.3 represents a neuramic acid group represented by general formula (V): ##STR2## R.sup.5 represents ##STR3## or hydrogen; R.sup.6 represents hydrogen or a ceramide group represented by general formula (VI): ##STR4##

GM.sub.3 analogous compound

Novel unnatural ceramide related compounds, for instance, (2S, 3S)-2-tetracosanamido-octadecane-1,3-diol are herein provided, which are useful as intermediates in preparing ceramide moieties employed in the preparation of glycolipids and gangliosides known as tumor markers or molecular markers and which are prepared by, for instance, subjecting a chiral compound represented by the following formula: ##STR1## to deacetal treatment.

Un-natural ceramide related compounds and preparation thereof

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Tachikawa, Japan

Shuji Fujita