Japanese Patent JPS6228140

B2

Aldol derivatives of the formula, …… wherein C = W is a carbonyl group or a protected carbonyl group are intermediates for producing methanoprostacyclin derivatives which are useful medicines for prevention of thrombosis. Such a compound can be produced by cyclizing a dialdehyde compound of the formula …… wherein W is as defined above, preferably in a solvent, with an acid or a base. The dialdehyde (II) can be obtained by oxidation of an olefin.

JPS5949210

[Title of the Invention] A manufacturing method of 2, 3-dichloro 1, and 4-naphth quinone

ONO KEIICHI
SUGIE AKIHIKO
KAWAKAMI HAJIME
KATSUBE SUMIMOTO

JP1469079A

June 18, 1987

February 09, 1979

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SUMITOMO SEIYAKU KK

C07C45/00; C07C45/28; C07C45/30; C07C45/40; C07C45/59; C07C45/67; C07C49/523; C07C62/32; C07C67/00; C07C405/00; C07D317/72; C07D319/08

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