Kharatti Lal

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The synthesis of C-nor-9,11-secoestradiol (4) has been achieved from 17 beta-acetoxy-11-chloro-3-methoxy-C-nor-9,11-secoestra-1,3,5(10)-tr ien-9-one (1) through a sequence of reactions without affecting the stereochemistry of estradiol-17 beta. Removal of the 9-keto function of 1 by hydrogenolysis and its subsequent treatment with Na/NH3 gives(More)
This section define a level subring or level ideals obtain a set of necessary and sufficient condition for the equality of two ideals and characterizes field in terms of its fuzzy ideals. It also presents a procedure to construct a fuzzy subrings (fuzzy ideals) from any given ascending chain of subring ideal. We prove that the lattice of fuzzy congruence of(More)
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