Robotic techniques in endometriosis: six steps for excision of rectovaginal nodules - the butterfly method.

Objective: To present a standardized and reproducible approach for the surgical excision of deep endometriosis in the rectovaginal septum, represented by #ENZIAN A.

Design: Surgical video article.

Setting: A tertiary referral center.

Optimized Synthesis of New N-Mustards Based on 2-Mercaptobenzoxazole Derivatives with Antitumor Activity.

New di-(β-chloroethyl)-amides of some acids derived from 2-mercaptobenzoxazole were prepared by reaction of the corresponding pivalic mixed anhydrides with di-(β-chloroethyl)-amine. A study regarding the optimization of the chemical reactions was made for the case of di-(β-chloroethyl)-amines. The quantum chemical analysis by Spartan'14 was made in order to establish the most stable configuration of the ground electronic states for the obtained chemical structures and some physico-chemical parameters of N-mustards reported in this paper.