{'fraction_non_alphanumeric': 0.03685897435897436, 'fraction_numerical': 0.019230769230769232, 'mean_word_length': 5.578947368421052, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Study on synthesis of benzylpenicillin sulfoxide p-methoxybenzyl ester

Penicillin G potassium salt was esterified by p-methoxybenzyl chloride to obtain benzylpenicillin G p-methoxy-benzyl ester,which was then directly oxidized by a mixture of CH3CO3H and H2O2 to afford benzylpenicillin G sulfoxide p-methoxybenzyl ester(at a total yield of 84.1%),followed by oxidation by peroxy-acetic acid(with a concentration of 17 percent w/V) to give benzylpenicillin G sulfoxide p-methoxybenzyl ester(at a total yield of 94.0%).The two methods have prospects for commercial application featuring safety,good economics and high yield.